i agree Tanks / Bards / Summoners need to be seperated
and Archers / Daggers too
here is my idea
1) Buffers _ 3 Heroes
2) Healers _ 3 Heroes
3) Tanks _ 6 Heroes ( still prevent other classes -> Dwarfs )
4) Bards _ 2 Heroes
5) Summoners _ 3 Heroes
6) Daggers _ 3 Heroes
7) Archers _ 3 Heroes
8) Warriors _ 4 Heroes
9) Mages _ 4 Heroes