Well if it came down to a team of heavy's playing a team of lights(At the same skill level) then the heavy's have the upper hand. So i think we would have to set a body size limit. So that why we mix it up so that they cannot stack heavy's. If i was running at team of 5v5 where we had to have 2 heavy's, 2 mediums and 1 light i think it would have to be 1 medic heavy, 1 solider heavy, 1 solider medium, 1 engineer medium and 1 light operative. For the main build, but of course it would change accordingly.
Wow, and who ever said heavies'd be overpowered? Have you played the game yet? The only demos we've seen had mediums only, so I'm really curious how you came to that conclusion... :\
My understanding was that heavies were heavily (eh) limited in terms of mobility. For example, in the 'container City' video, the heavies would NOT be able to go by the side route on the right and have to go trough the 'main' doorway. A
lights-heavy team would simply have to slow the heavy team enough for it to be unable to reach the crane and repair it in time, for example, for it to win (which, considering the detours it seems would be necessary for a heavy to reach the crane, wouldn't be all that difficult)... (Of course, that is if its Security playing as Heavy-only)