For choose the challengers of the month, for me, should consider the time zone of the tournaments.
For example, have some managers in America, but, in some months, have tournaments in America zone, but here, the board prefer tournaments in the Europe.
Marto considered this. ^^
Exemple (II) - In this week, would be more easy for Freak, be manager in Campinas than Izmir.
This is only a opinion. =)
In general people like to play bigger challengers. For me for example, I don't care about the players that are between 200 and 400, is only tougher to pick. I prefer the biggest challengers so that I actually know the players. But if people think different about that, we would be please to know.
For the manager story, I don't think we should start choosing tournaments so it is easier for managers. There are more than enough players from Europe who could have managed Izmir. It is just that those players didn't say they would do it. We are always looking for new managers, so if somebody is interested, let us know!