Questions:
7.1 - if u drop below 6 battles, a player is "permanently" on support team? What if u win all battles next round and have more than 198 cards, do u only play 5 matches? Also, does the players role disappear, or can u distribute 6 roles amongst 5 or fewer teammates?
7.4 - In your example of 1 attack and 1 defend being attacked by 3 players, does the defender have to play all 3 defensive battles or can that be distributed amongst all support players?