Secret Projects eh?
Well one of my ideas was to enslave one of Io's avatars, then changing its mind with Phibrizzo so I would have a 100k PL divine PC... (not sure if Edena would have allowed the mind-switching part)
Learn those forsaken words from Orcus (who used them without 10th, 11th, or 12th level magic to slay mortals and gods alike) so I could kill other deities and assume their portfolios as well as possibly some taraakians.
Combine Acererak, Myrkul, and Zouron the Dark to form the Dark Trio, the ultimate god of undeath
(Dang Project Oerth or whatever it was called) -was going to add Vecna here, but he was kinda obliviated
Turn Sanctus Punitor into Hellmaster's liuetenant as well as a blackguard. (Prolly wouldn't happen, but just a thought)
Bring everyone to Ravenloft and pit them against each other (just for fun) -note I wouldn't kill anyone unless I had to
As Kalanyr said, what fun would there be without villains? So in my turn I was thinking what fun would there be without heroes?
Steal Forsaken One's diadem of dreams for myself (thought about this before the taraakians tried)
Use the arm and leg of Melkor, the brain fluid of Anabstercorian, and something else (?) from Vaeregoth to make them do silly things...Vaeregoth (sp?) as a 200k+ PL PC doing the chicken dance infront of the Taraakians, fusing Melkor's arm and leg onto someone else? etc...
I know I had some more plans, but I can't think of any more right now