Questions, answers, and resolution of disputes regarding the online rating in HoMM5.

By the way, you could make it so that each player can only ban one hero for every 4-5 games, without the possibility of choosing the same hero again.

Could you please provide more details about this point? So, is it allowed to repeat heroes or not, and for how many games does one ban apply?

Added 2 minutes later
The rules don't mention anything about repeating heroes, but they clearly state that 10 heroes are banned.