I would Like to be able to teach one and the same power several times, for example: we study the Resurrection of the Serum two times, spend 2 power points. Why? So that, in one case study advantage Reanimator, and in another Rank 3. Now we have 2 different abilities executed in the same style. Of course we can take a Redemption from Celestial for the same purpose, but the image of the character will be violated. Another example: Two-Gun Mojo in one case study Rank 3, and in the other advantages Crippling Challenge and Nailed to the Ground. I think the idea you get

I see some problem with cooldown powers there. If you could learn the same power multiple times, you could just rapid fire these.

Well, they could just have all clones of a power share a cooldown, similar to how active offense and active defense powers work.

I agree, the meaning of the clones is not in how to re-use the same power to its recharge, it is in how to use it with different advantages. Shared cooldown should be. Moreover, it is possible to make the separation of trained advantages, is studied in one power, then locked in another, perhaps it is not about rank.