1 and 2 I agree with. Though I won't set any mandatory amount of leveling content, just make it cap at 100 on WoW's 10th anniversary.
Now then...
3. There should be something like guild groups for server groups. They should give increased exp, gold, and (maybe) a bonus to your champion faction.
4. Honestly, I haven't had a problem with normals needing incentives. But it's clear heroics are in need of an incentive to keep them from dying in favor of normal.
5. Blizz is playing around with this right now. Though I think the ship to avoid the death of 25-mans sailed with the introduction of LFR.
6. Homogenization is a term Blizz hasn't used since Wrath. And the majority of stat removal was in Cata, only a few things were reworked in MoP (spirit was the big one). Though I do agree, we don't need more Chi/Holy Power/Shadow Or... you know what, let's just say Chi whenever we mean the plethora of Chi-esque resources added in Cata/MoP.