How about a variataion on the Trial/Task Force theme? (btw I think it would be fine to have this as a Solo OR a Team event.) I really do NOT like the idea of only being able to be done Once EVER per Toon; nor a "Monty Hall" like once per Issue either.
How about instead the 2nd time a Toon makes a "Total Respec" (Origin, Power Sets, etc.) the Toon is re-set back 10 levels, the 3rd time Ever re-set 20 levels, etc. The 6th and any subsequent "Total Re-sets" would allow you keep your Badges, Influence, and even Enhancements, and to re-pick your Toon's Powersets, Origin, etc. Even any unlocked costume items, including capes. This would certainly add signifficant discouragement to over-use of this option. It will also greatly reduce the "n00b" at 50 factor if players had to earn back their levels.
I have Toons that I have had since the Beta that I can not bare to delete, yet I never really play either. An option such as this would allow me to breath new life back into these foundly thought of, yet deeply flawed Toons. But I Really do NOT want to see this as Once Only. Mostly because I am hoping they will eventually create "new" Power Sets; such as the PISTOL Power Set I have been hoping for since the Beta!
As for Enhancements I think they should offer the standard option to Keep or Sell them (perhaps they could treat these Enhancements just like when a Toon is Exemplared?), or they could be auto-placed into an Enhancement storage in your Toon's Super Group Base, assuming your Toon IS in a Super Group.
I am an admitted "Alt-a-holic" and a Badge Wh@... uh, "Badge Hunter". I am also getting ready for another tour of duty in Iraq, I missed getting the First Aniversery Badges because I was on a base with NO possability of playing an MMO. At least this time I should be able to at least log in to get the 5th Aniversery, if not really play.