Awesome Music: The remake's soundtrack provided by former Rare composer Grant Kirkhope.
The original soundtrack on the Genesis as well. The remake offers an option to play the game with either Kirkhope's soundtrack or the original 16-bit music.
Guide Dang It: The intro has Mickey making quick work of three guards by jumping on them. Then when you try it yourself, Mickey gets hurt because you need to press the jump button again to take out an enemy.
In the remake, all the A enemies in level 4 will endlessly shout out "A!". It's even their death cry.
No Problem with Licensed Games: One of the most beloved licensed Sega Genesis platformers, and considered one of the best Disney tie-in platformers. Sega notably gave it a promotional highlight via their "Genesis Does" ad campaign.
Thus, the Castle of Illusion being sent to the Wasteland in the sequel is something that boggles the mind.
Or maybe not; perhaps it's a case of Adaptation Displacement applied to remakes, and the idea is that the remake made people forgetting the original. And thus, the "original" Castle of Illusion is the one that is sent in the Wasteland while the updated version remained in the real world, just like what happens in the original Epic Mickey for Big Bad Pete-with-the-peg-leg who remains in the Wasteland while his updated, peglegless version is still in the Real World.
Pandering to the Base: The HD remake, seemingly confirmed by this Siliconera article. It even goes on to brag about how hard it will be and how "it doesn't feel like a kid's game"note Even though it's technically supposed to be either way.. What's more, it mentions that it won't have an easy mode, despite the fact that there is one in the original version.
Might be a case of Blatant Lies though as the actual game is far from Nintendo Hard. Heck, falling down a bottomless pit now merely strips you of an energy point rather than a life.
Scrappy Mechanic: The HD version has delayed input on controls, although this only happens on certain HD monitors.