You are an amazing font of ideas. All of these are good. Aren't you working on a game yourself? If so, I can't wait to see it.

"...defending players have to be present during the attack and send their units to an undefended account to avoid losing them all."

This is new information to me. I have only one alt in the game, and had I known of this capability, I would have at least two. Please elucidate.

Thanks!