These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Growing the Beard: Tweaks were done to the show's format and production near the halfway point of season 1; the show began trying to avert Who Wants To Be Who Wants To Be A Millionaire (with less tensity/padding and a brighter, revised set with a grandstand-style seating area instead of the stereotypical "theater in the round"), and the show experimented with new formats (such as a Celebrity Edition and the "Last Man Standing" format).
By its return in the summer, the show began to do more celebrity specials, a few more Last Man Standing episodes, and episodes with teams (usually couples) playing together (either taking turns having a go, or playing a cooperative game), and toying around with a Million-Dollar Mission to force people into playing their Unwinnable trap of a Final Boss. Ratings also improved greatly upon its move to a weekday timeslot in NBC's Summer lineup as a lead-in to the popular Americas Got Talent, from its original Sunday-night slot. Fans will tell you that the end of Season 1 was the best — the contestants were relatively normal, the atmosphere was lighthearted, and the show was extremely fast-paced.
However, as quickly as it did that, it also developed Seasonal Rot just as quickly: by Season 2, MTWI began to show signs of Deal or No Deal syndrome - it became flooded with library pop music, increasingly obnoxious contestants, sob stories for just about everyone ("You haven't seen your dad for 10 years, now turn around!" *cue lots of crying, hugging, and not playing*), generous amounts of Filler, the manifestation of Viewers Are Goldfish, and liberal use of Commercial Break Cliffhangers at the drop of a hat. The foreign versions, unsurprisingly, managed to avert this and are still much like the American version was in its prime.
Unfortunately, other than the new host, top dollar amount, location (in New York now), and theme song, GSN's revival is literally the same show, right down to the obnoxious padding.
Replacement Scrappy: If the victory song is anything but "Get Up", it's bound to fall into this Trope.
Apolo Anton Ohno somehow manages to be an even worse host than Guy Fieri. At least Guy had a little personality and provided the show's name; Apolo's just bland and uninteresting and provided the quickly annoying "Every second counts!" catchphrase.
Some people actually liked the original funk-inspired theme music better.
Surprise Difficulty: Although the games are played using typical household items, quite a few of them have proven to be very difficult.
That One Level: Supercoin is the only known Level 10 game. Out of anyone who have played it (with it either forced upon them as a bonus level for winning a group competition, being a lucky audience member, or being the few to make it this far in an actual game), it has never been won.
They Changed It, Now It Sucks: The Summer episodes added a "Million-Dollar Mission" at the end of each show, where a selected audience member got a free shot at Supercoin. People complained that it smacked too much of Deal or No Deal, and the contestants chosen from the audience to play it typically were of the kind you'd see on Deal...well, if the show was still on.
Though Minute's Million-Dollar Mission was far superior to Deal's in that you still had to earn that cash (and with Supercoin, earn it you shall), whereas Deal was all but giving the money away.
In another aversion, some thought the competitive "Last Man Standing" episodes (10 contestants, eliminate the worst performing player after each game, winner gets $100,000 and a chance to also play that game for $1,000,000) were also a great idea
They Copied It, So It Sucks: Early in development, the show was going to be a ripoff of The Cube — a more elaborately produced British stunt game that had been shopped around to CBS and FOX around the same time MTWI's pilots were taped. It ended up being changed significantly later in development and even post-production, with the final product more influenced by Who Wants to Be a Millionaire? and Beat the Clock. Despite this, the show gained a significant Hatedom by some fans of The Cube for this reason, especially on Game Show website BuzzerBlog...whom some have argued has taken it to Hate Dumb levels.