It's a pretty easy solution.  Just put a lvl req of 70 on all of the buffs (custom damage shields and regens) you don't want people to PL with... that was SoE did when they got all butthurt about powerleveling.

Now I realize that after some one gets deleveled, they have a high level player buff them, esp with regen, ds, etc. This might get fixed in the near future as well. Its intended to play as a noobie although I know its a natural human desire to find every possible short cut.

That's absurd