Welp, so start there are various aspects that I like from Sonic 3 & Knuckles from Origins, and I can say that this was great, ngl I'm impressed by the fact that they expanded the sprite assets for the characters, giving them sprites that didn't exist in the original game, and thinking about it now, I wish this was also in Sonic 3 AIR, since some of the Super Sonic sprites just keep using some of the normal Sonic sprites in Sonic 3 AIR, although some rom hacks also do this such as Sonic Classic Heroes. I also love the touch they gave to some of the cutscenes like the Lauch Base to Mushroom Hill where Eggman hits the ground with the Eggmobile while it's burning, spreading the flames and shortly afterwards causing the platform to fall off, while this didn't happen in Sonic 3 AIR

Also, while the Super music in Sonic 3 & Knuckles from Origins isn't the one people asked for, hey, at least you don't get to hear the invincibility song over and over every time you transform, although I prefer Sonic 3 AIR over the game from Origins on this one because of the music from the prototype. I also need to add that there are some aspects where I prefer Sonic 3 AIR over Sonic 3 & Knuckles from Origins, besides those, and here are some other aspects; in Sonic 3 AIR, you can set up if the themes for the Acts 1 and 2 for Carnival Night Zone, IceCap Zone and Lauch Base Zone are gonna be the ones from the original release or the prototype ones, and I chose the prototype songs because I wanted to listen to those, for the title screen you can set it up if the theme for this is gonna be the one from Sonic 3 or the one from Sonic & Knuckles, and for the 1-Up jingle, the invincibility, Mini Boss and Knuckles themes you can set them up to be the songs from Sonic 3 or the ones from Sonic & Knuckles, or if you prefer to hear both songs, you can jist choose this setting named "Pick by Zone" which will play the song according to the level you're playing, and in the case of the Knuckles theme, if you want you can also choose to listen to the one from the prototype.. while none of this is possible in the game from Origins.. there's so much more that Sonic 3 AIR has that Sonic 3 & Knuckles from Origins doesn't, like the morning dawn look for the beginning of IceCap, difficulty changes, visual enchantments, the possibility to turn off thr Outrun camera, so that it always keeps up with you, no matter how fast you go, etc., while this isn't possible in Origins, and of course, here goes what Sonic 1 Forever, Sonic 2 Absolute and Sonic 3 AIR have that Origins doesn't, the achievements you can get

One thing that Origins has that those three don't tho is that incase you fail the Special Stage, they give you the chance to try again, as they allow you to retry with one coin, which I give Origins a point for. But nonetheless, pretty great by far!