I just downloaded the remake of Castle of Illusion for PS3(might be on 360 as well?). Gotta say, so far, I think it's really well done, surprisingly so! I haven't checked to see who the actual dev was for it, but everything so far is top notch. They did a flippin' great job on the music, it sounds very Disney with the instrument choices. I actually never cared much for most of the music of the original. Infact, I recall getting one tune stuck in my head as a kid(thanks to my OCD) & kept me awake for hours(Zelda 1's dungeon did the same thing).
In any case, no offense to Wayforward & their Ducktales remake, but they did a bang up job! There's a lot of attention to detail with the animation, not to mention the sound effects. I do think it's easier(so far, I'm in Toyland ATM), which is fine for dullards like me who have always kinda sucked at video games. I didn't notice a difficulty setting, maybe one opens up after you beat it. Oh, & I could be wrong, but for any of those who may have played the Uncharted games, I think the narrator in this is the same guy that does Sully! Kinda weird, but I think his performance is really well done.
Forgot to mention, it's mostly 2D, but it does have some 3D ala Crash Bandicoot(or atleast it reminds me of it in the first 3D area). Also, in general, I think the gfx are beautiful, even though they aren't sprites.