Yeah, it seems like it's just the outline that's throwing people off.
Looking at non-menu screenshots though, I wonder how much of this was a deliberate decision based on how they'd look compared to the environment? The sprites look like they'd be at risk of blending in with the environments without such a pronounced outline. We can analyze stills against a menu background all we want, but the sprites have to be functional during combat.
I actually don't mind the new look of the units. The actually maps look way better now (Not that the psp version looked bad).
Like others have said the main issue is the slow slow speed of crafting. Only being able to craft one material at a time with that slow animation takes so damn long.
Also, I'm not sure they mentioned but I hope they tweak some unit damage. Archers are so strong in this game. It basically breaks the game when you have a few of them decked out in your squad.
Regardless if they make those changes I'll still buy the game because it's one of my favourite games ever. I hope lot's of people buy it so hopefully we can get a new game in the future.
I don't know much about this game as I've never played it before, but people have said that there's a lack of a TP bar and that the HP/damage balance seen in one of the screenshots is not what they remember, so it's possible the entire combat balance may have been entirely redone. Not to mention character-based leveling instead of job-based leveling.
Those tweets arguing about the sprites above actually tell me a few other things:
1) This remaster/remake is most likely from CBU3 staff, which has a lot of former Tactics staff, not to mention their history of working with Matsuno. The new font is similar to what you'd see in FFXIV.
2) There's a conspicuous greyed out 0 in front of the level numbers that's absent in the original versions, suggesting that character levels in this remaster/remake could go past 99.