Super Robot Wars T, by dint of serendipity, will be the closest the franchise has come to having (nearly) every property involved being licensed for sale in North America prior to release since Super Robot Wars W. In fact, some of these were on the nose: Armored Trooper VOTOMS was picked up for licensing by HIDIVE roughly four months prior to the announcement of Terra, while Discotek Media brought over the specific version of Captain Harlock for this game in May 2017. The only properties not licensed for distribution by time of release were The Brave Express Might Gaine and Invincible Robo Tryder G7 ("Trider G7", however, did get a release in Italy during the 1980s).
The standard version of the game does not contain any music from Expelled from Paradise, with Angela Balzac's Leitmotif defaulting to a game-original tune titled DIGITAL DEADLINE. This marks one of the very few instances in which Super Robot Wars creates a song to serve as the battle theme of a licensed series. Oddly, Expelled From Paradise's theme, Eonian, is in the Premium Sound version of the game.
Despite receiving a fairly lavish English localization (including a limited theatrical release across the United States by Aniplex USA), Expelled from Paradise flew under the radar of many people outside of Japan in 2014. Its announcement for T has stirred renewed interest in it.
Downplayed with Cowboy Bebop, Magic Knight Rayearth and Arcadia of my Youth: neither were unpopular, but after their respective runs and some old Spin-Off video games, they didn't get any new, substantial media entries in the 2000s and early 2010s, staying as Cult Classics, but their announcement in T re-started interestnote In the case of Cowboy Bebop, it gets further bumped thanks to Netflix announcing a live-action adaptation shortly after its inclusion for this game was revealed.
Descended Creator: Hidetaka Tenjin, the mecha designer for the Tyranado, voices Hirosuke Amasaki.
There are two girls named "Hikaru": if the surname is "Shidou", she's the younger Magic Knight of Fire; if it's "Amano", she's the eldest Aestevalis pilot and a Yaoi Fangirl. This case is actually used in-universe during the "Beautiful Criminals" DLC; when Hikaru (Amano) declares herself "Miss T3", Izumi snarks that she's confusing herself with T3's other Hikaru (Shidou).
For further surname shenanigans, when it comes to Amano, is it Hikaru or Kazumi? Likewise, Spike has the same surname used for the "Spiegel Gundam" belonging to Schwarz Bruder.
Unshou Ishizuka passed away months before the game's announcement. However, he managed to record the lines necessary for Jet Black in one of Spike's Bebop Formation attacks before passing away.
Umemaro Kakikouji is voiced by the pre-recorded voice of Ichirō Nagai, who passed away in 2014.
Pre-Order Bonus: Like Super Robot Wars V and Super Robot Wars X, pre-ordering T will allow players to unlock the Gespenst and the Deuteragonist as a pilot earlier in a play-through. For those who bought the Switch English version, said content is now a day one game update patch, allowing Switch users to enjoy it too. (To be fair, Bandai Namco made this workaround due to a lack of a Nintendo eShop for the SEA region.)
What Could Have Been: According to Super Robot Wars series producer Takenobu Terada, the original 1978 Space Pirate Captain Harlock was considered, but T producer Shouhei Mogami wanted Arcadia of my Youth. The team eventually settled on the latter as the titular Arcadia battleship is more recognizable by fans due to its green color, including The Cameo in Galaxy Express 999.