I feel its even better than the original however, like almost anything, there are downsides.
The multiplayer is local co-op, no option. Thats not too bad, plenty of games function fine local like Magicka and Gauntlet. I feel Super Motherload behaves the same in that aspect, especially with controllers (Plays best with gamepad, Comrade!). The game also seems to lack in content to me but thats remedied by the high replay value. Honestly, thats the only real downside I see and I feel they can easily make it online multiplayer and may even be planning on it.
Many complain about the game being too easy and actively ignore hardcore mode or complain about the storyline and how its different from the original. Of course it is, they don't want it to get stale.
The graphics are improved of course and I LOVE how it has clever little puzzles that you can solve with different bombs. Nothing feels better that getting a Universe Chain of unobtainium.
My brother liked the smelter, I didn't care for it too much.
The transmission cutscenes are fully voiced and I absolutely loved that.
Honestly, this is one of those games where if you like this type of game but you don't like Super Motherload, its your own damn fault. Many complain about broken textures or black screen and say the GAME is bad for that. Don't listen to them.
Great game, great music, great graphics, great replay value, can't really ask for more in a game.
BONUS: It comes WITH the original Motherload Goldium edition as well for the nostalgia. Cool.