Series 1 -
Goku
Gohan
Vegeta
Perfect Cell
Frieza (Final Form)
Each of these could have an exclusive (or chase if that is still an option at all)
Super Saiyan Goku
Super Saiyan Gohan
Super Saiyan Vegeta
Cell (1st Stage)
Frieza (Mecha)
Out of all of the different Anime this is by far and away my favorite and I know from looking for things how well DBZ stuff generally sells. If we were able to get any in Pop form I could really see them flying off the shelves.
And....If Adventure Time can get multiple series (w/ the 2nd one coming) a second series would also be amazing
Series 2 -
Kid Goku
Piccolo
Majin Buu
Future Trunks
Master Roshi
And my final request will be a 9" Giant Ape that the Saiyans turn into...

So many possibilities and after thinking about it a lot today I just had to spill it all out on here. Hope Brian reads this and can try to push forward with the anime ideas.
#End of Fanboy Rant