I think you all are forgeting a sect in G4, the drayaks near the end. They were starting to rebel against the Drakons remember-and although they might not make a full sect, they might create a new rebel side-those who oppose the rebels and those who oppose the shapers like the trankovites.So it is possible that they will just join with the Tranks but who knows till the game comes out...Jeff does.....amd Bhuda.....My breakdown
1)Shapers who wish for their old ways
2)Rebels who are with Drakons
3)Rebels who oppose the Drakons
4)Shapers who will fight but change their ways a bit
5)Humans who ally with creations like the drayk and will try and make the world of geneforge a better place for creations AND humans)
I dont think there will be Tranks alone because of the fact that now i think it will break shapers and rebels into what i said above.And Jeff if you read any of these, Hurry i cant wait no longer....