Reimagined Enterprise is a work posted on AlternateHistory.com by BlackWave, also known as the author of Swarm on the Somme and Great Interstellar War. Essentially it is a Continuity Reboot of Star Trek: Enterprise, seeking to address some of the issues fans had with that show by making significant changes, while still producing something recognisably similar rather than just generically 'a prequel to Star Trek'.
The series is posted in episodic form, but as written prose rather than scripts. It is currently part way through its second season. Most of the episodes are written by BlackWave, but there have been some written by guest writers including Thande, trekchu and William_Dellinger.
A list of episodes with links to them can be found here.
Has a cast page.
Contains examples of:
Arc Welding: This series puts together many different disconnected references and plot points from Star Trek canon into new stories.
Blue and Orange Morality: Doctor Zora does not understand why the Enterprise crew are so horrified by her kidnapping a good chunk of the population of a primitive planet and doing experiments on them. The Enterprise crew clearly belong to developed species, after all, not like the primitives of Tiburon. She says her expedition has backing from her home-planet, but it is left unclear to what degree they are aware of and would agree with what is happening on Tiburon and so how much this trope applies to the Teloshi in general and not just Doctor Zora 'of Tiburon'.
Broad Strokes: There are various comparisons that can be made to the canon Star Trek: Enterprise despite almost all the details being different: Captain Hwai's grandfather was involved in the development of the warp five engine, just as Archer's father was; there are characters called Travis Mayweather and T'Pol, though the actual people are quite different; the first episode involves first contact between humans and Klingons; and so on.
Divided States of America: "Remembrance" shows the late twenty-first century USA having fallen into this state as a result of World War III and the Postatomic Horror, even being nicknamed 'the Disunited States'.
Everyone Went to School Together: In a minor example, McLeod and Satterthwaite's ancestors met once during the Postatomic Horror, although their descendants weren't aware of it until they shared family stories in "Remembrance".
Future Imperfect: A few minor examples mentioned in passing, though stemming from ignorance of the historical record rather than there not actually being one. For example, at one point Captain Bowman of the Dauntless mixes up Buzz Aldrin with Buzz Lightyear.
Hero of Another Story: Many — UESPA might only have two Enterprise-class starships (the second, Columbia, commanded by Captain Erika Hernandez), but Shran is reminiscient of his counterpart in the canonical show, and Earth has other classes of ships. The eponymous episode Of Another Story focuses entirely on Captain Paul Stiles of the Daedalus and one of the incidents the Daedalus is involved.
Meaningful Rename: The Hebitian race renames itself the Cardassians after being taken over by the fascist Galor Cardas group.
Mirror Universe: The one that was the Trope Namer, of course. Each season has one "Mirror Shards" episode set in the Mirror Universe, using similar concepts to the acclaimed "In A Mirror, Darkly" episode from the canon show.
Myth Arc: The approaching Earth-Romulan War up until the last episode of the second season, where it shifts into the ongoing Earth-Romulan War. Would be a spoiler, except, of course, it was established long before the series that there was an Earth-Romulan War around this time.
Mythology Gag: All the time. One example is that, in a flashback showing the Eugenics Wars, Khan Noonien Singh's fanatical supporters shout their leader's name as a war cry...so in other words, "KHAAAAAAAAAN!"
Named After Their Planet: The Romulans get this because the name is said to be a human codename derived from an older human arbitrary label for their star on old starmaps which drew upon mythological names. Also with other races there are sometimes attempts to justify this, for example saying that that race has many languages and doesn't have a single common name for its homeworld, so humans just name the world after the race.
Name's the Same: Some characters have the same names as their canon Enterprise counterparts, but are decidedly different characters, such as T'Pol, Travis Mayweather and Shran.
No Transhumanism Allowed: Star Trek's use of this trope is explored; the Eugenics Wars had already justified why Bio-Augmentation is off the table, and the reason for cyborgs being a no-no appears to be that there were a few experiments in cybernetics on twenty-first century Earth, but the collapse of the internet as a result of World War III meant the users all died in a Keystone Army fashion.
Parody Names: An exaggerated version of the canon show's Jonathan Archer called Abner Bowman appears as the captain of the USS Dauntless; Abner being a relative and colleague of Jonathan in The Bible and bowman being another word for archer.
Planet of Hats: Usually there are some attempts to avert or reduce this trope compared to the canon show. To be fair, the prose format makes it somewhat easier to avoid reducing races to a stereotype compared to TV.
Recursive Canon: One of the early twenty-first century pop songs Audrey Rocia listens to is Faith of the Heart.
One of the ships visibly trapped within the gravitic anomaly in "Becalmed" appears to be a TIE Fighter, and later in the background of an image on Hebitia / Cardassia we see Goa'uld Death Gliders and the TARDIS.
Take a Third Option: Many fans disliked the overly TNG-like aesthetic from Star Trek: Enterprise and most fan reimaginings give Enterprise a more TOS-like aesthetic instead. Rather than doing this, BlackWave instead created his own 22nd century aesthetic that's halfway between contemporary spacecraft like the Space Shuttle or Dream Chaser and TOS, logically enough.
The rest of the crew can't stand this "Faith of the Heart" song Rocia listens to...
In "The Giant's Foot", Mayweather pretends not to know the name Rigel in order to get a rise out of Al-Hamdani, who points out it is one of the most well-known stars in Earth's night sky. This being a reference to how the canon pilot episode "Broken Bow" bizarrely seemed to think Rigel was an alien name that none of the human crew had heard of before.
Theme Naming: The Enterprise-class ships are named after space shuttles. (This idea was also used in the Star Trek: Enterprise Relaunch novels, both noting that for purely coincidental reasons, the two NX-class ships seen in the show itself were called Enterprise and Columbia, just like the first two space shuttles).
Throw It In: The Dauntless class starship design started out as Thande's own concept for an Enterprise NX-01, and was incorporated into this setting as a different class of ship.
The Dauntless uses a visual Call Forward (the two ships flying in formation) to imply that the Dauntless and Enterprise starship designs both lead to the Constitution design lineage, the Enterprise providing the saucer-section and the Dauntless providing the tubular secondary hull.
Wham Episode: Second season finale "Salem-One", which reveals just why Picard once compared that space station to Pearl Harbour...