let's say I magically get to choose how the game is at my whim, and you are there to convince me not to. why would it not work?
boss health stays the same, but other things can be different. why can't we make longer lasting fights on 10-heroic and much shorter on normal and LFR?
also, by having groups split into smaller and "more elite" groups, you promote sociability on the realm (or bigger guilds with many raiding groups). I can't imagine this as a bad thing.
---------- Post added 2013-02-03 at 02:48 PM ----------
no, it's to make the game logical. I'd probably be sticking to the 40-man LFR lol