Its not true that all series are 10 statues, Series 1 was 6, series 2 7, 3 was 11 and 4 was 7, 8 or 9 depending on how you count.
Its not a question of what each one wants, it has to be realistic too. Some time ago Ivo (Darth Mystery) and I started to think about criteria each had to series met:
- One addition to the Jabba Diorama scene
- One droid like
- One Imperial Trooper of some sort
- One core dark side character
- At least one prequel character (we know that attakus loves the OT more, so you would expect more OT pieces than PT)
Judging from this list you can (IMHO) derive two certainties:
1)The only main core guy which hasnt been done is Dooku.
2)The only logical addition to the Jabba Scene would be Lando or to lesser extent Leia as Boushh (however we allready have a leia for the Jabba scene).
As a wishlist this would lead:
3)an AT AT driver as trooper (however we are allready getting two troopers from the polls)
4)a Droideka as a droid
but as I am a droid fanatic - any droid would do
The rest is just guessing, however - any new Attakus piece would do at this time tbh