Theorized resource progression

[Jhaelen]

This is what I'm guessing the power resource count is going to be as you level up. Pardon me if this has already been discussed here.

Well, we already know that at a certain point the number of powers you have will no longer increase, instead powers will be replaced by stronger ones.
Imho, it would make sense if you reached your 'peak' at level 10. Level 11-20 will replace your original set of powers at the same progression rate. The same will happen from level 21-30.
About the only thing I can see increasing over the whole 30 level range are 'powers known', but not 'usable/prepared powers'.

 

[Zelgadas]

I'd imagine that some of the higher-level powers are sort of like upgrades for your lower-level powers, using those powers as prerequisites. Power trees, effectively. We know that Cleave is a 1st-level fighter attack, and that it allows you to attack an opponent in melee and deal a small amount of damage to another opponent adjacent to the original. I think that some higher-level powers will allow for multiple cleaves, or cleaves that do not require the opponents to be adjacent to each other, or cleaves that deal more damage. I'm also envisioning higher-level powers that turn some of your lower-level dailies into encounter powers. I'd also be a little surprised if some of your power slots weren't used to double up on powers you already have, so you can use them more than once. Of course, I can't prove any of this.