The EPP/PPP customization would be nice, but part of me thinks that the Blackwand and the Nemesis staff should be left as-is. They're not really OUR powers, you know? OUR powers we can customize, but the staves... I just don't know.
Updating the Prestige sprints would be sweet, though.
Michelle
aka
Samuraiko/Dark_Respite
Dark_Respite's Farewell Video: "One Last Day"
THE COURSE OF SUPERHERO ROMANCE CONTINUES!
Book I: A Tale of Nerd Flirting! ~*~ Book II: Courtship and Crime Fighting - Chap Nine live!
MA Arcs - 3430: Hell Hath No Fury / 3515: Positron Gets Some / 6600: Dyne of the Times / 351572: For All the Wrong Reasons
378944: Too Clever by Half / 459581: Kill or Cure / 551680: Clerical Errors (NEW!)
THE COURSE OF SUPERHERO ROMANCE CONTINUES!
Book I: A Tale of Nerd Flirting! ~*~ Book II: Courtship and Crime Fighting - Chap Nine live!
MA Arcs - 3430: Hell Hath No Fury / 3515: Positron Gets Some / 6600: Dyne of the Times / 351572: For All the Wrong Reasons
378944: Too Clever by Half / 459581: Kill or Cure / 551680: Clerical Errors (NEW!)
yeah the blackwand and other assorted Temp powers really should be left alone. However, I absolutely want to be able to customize the flashy, ripply, or pink bits of the prestige sprints. I don't think we'd be able to customize the two 'rainbow' ones, but then again I like those the way they are already. 
Please read my FEAR/Portal/HalfLife Fan Fiction!
Repurposed
I hope that Power Customization will include the Prestige/Veteran Powers. Like the Prestige Sprint powers, Blackwand/Nemesis Staff, etc.
Most of all, I'd like to update the Sprint Powers. The Prestige Power Slide (CoH special edition) would look even better if you didn't have that purple glow around your feet.