There are great length of discussion of about which hero in FOC that is strong or IMBA. But there are less or none about choosing hero which help each others. As example, choosing 1 killer, 1 farmer and 1 support. Maybe Ichigo, Byakuya and Gaara. Gaara can use his almost perma-stun skill to help ichigo get early kills. Byakuya can always blink away or last hit anyone. Can farm at lvl 20 too. Gaara is a support for the whole game[farming infernal to up lvl everyone as example]. If the game stretch out to killing buu, Ichigo can always kill it in 10sec. Especially the Another Version 8.7b have ichigo capable of farming.
That is just an example. What do you think about combination of heroes? Which do you think the best?