The first is too complicated to realize. You can't know what numbers you will get and how many of them will speak English. You also can't coordinate the pews in the whole system if they are multiple groups, and it would be confusing (who's the target, for example) if all are in one. Additionally, you can't know nor control who appears after the pews start.
The second one is a bit unrealistic. Why would everyone duel, if one side knows most from the other one are better at 1 vs. 1? Or, if there are more players on 1 side, why would they just stand by side and wait until their comrades die so they can engage?
I'm against that, but if the demand is high enough, I'll try to implement it.
By the way, who won? What numbers or percentage did they have at the end?