My only feedback after day 1 is to require users to use their most well known nicks while playing tourney. It'd really help casual viewers to know which players play for which team by requiring players to have team tag in their name (like Heresy does) also.
They play with their normal nicks. The problem is, when they change their nick after the games, AoE shows the actual steam name in the replays, not the nick they played with. So they need to stick with their nick for the entire tournament.