I'm trying to describe two kinds of mechanics in a game, one kind that is rather boring, bland and simple, and one that is more rich, complex and flavourful. I'm trying to figure out an idiom / phrase to illustrate the point, but all the ones I can think of have a different meaning - "meat and potatoes" and "bread and butter" for example both allude to "the most basic thing", rather than a contrast between two things.
The kind of sentence I'm looking to make is "The A and B of game mechanics - the boring stat increases are A, rather bland and simple, while mechanics that change the game are the B, interesting and flavourful", or something along those lines.
What would be a good idiom / phrase to express the contrast between two things?