Just from my newbie (and still leveling/boosting) perspective... (although it might not fit with your plan)

I'd like to see leveling builds as in how to use talent points throughout the leveling process, ie:

Leveling mage:
Lvl 10-14 : Improve Fireball 5/5
Lvl 15-16 : Flame Throwing 2/2
Lvl 17-19 : Ignite 3/5
Lvl 20 : Pyroblast 1/1
etc...

When to respec (ie warlock at 50 for felguard, etc.)