Isn't it about time for WHM to get an AOE mitigation tool?

[Kabzy]

It just feels like they keep giving and giving to SCH and AST without realizing what it's doing to WHM.

You're being a little OTT again here. Scholar changes so far have been justified and needed(except the 4.1 changes, I think that was more for newbies tbh), they were in a sorry state compared to the other two. AST, as far as I can remember, haven't really received anything notable except for their Balance nerf. That's giving to WHM and SCH, not AST, and it was definitely a change that was needed.

WHMs main issues pre 4.0 were its lack of opportunites to DPS. Being both crippled by low mana regen and stance dancing. Both issues were addressed in favour of this job specifically. If you look at the 3.x -> now transition, WHM is the only job that has actually had a favourable uplift out of the healers.

Now I'm not saying the job is perfect, but it has its place and its uses. The only areas that WHMs are generally missing out on are speed runs, and that is such a small percentage of a small percentage of good raid groups out there. Due to the nature of speed running comps, one of the healers will almost always miss out because it would be impossible to create a perfect balance within the role. This is a fair trade off given that they are generally the strongest for progression. This next point is obviously subjective, but I feel that WHM is also generally the most popular healer, so if they could suddenly do everything it would have a much worse effect on the other two. You can't have it all.