POLL: What "Meta" do you think is the best for balance?

I'm curious to know what people think is the best sort of meta (based on role) to try and balance the game around. For a little bit of help:

Tanks - Balance around how much damage champions can take. Assassins - Balance around how much burst champions can deal. Marksmen - Balance around DPS. Supports - Balance around utility. Mages - Balance around magic damage dealt/utility. Fighters - Balance around DPS/damage taken.

I personally think it's best when balanced around tanks, because it should be easier to gauge what reasonable burst/DPS should be if you are able to gauge what damage can be soaked.

I hope what I'm asking makes as much sense to me as everyone else. I get the feeling it won't. Welp.

EDIT: Sorry if this is in the wrong category. I'm but a simpleton.