I am not sure if it was posted here before but I could not find any thread about this issue.
It would be really helpful if messages in the game chat would have the prefix "all" or "team". In current MG version there is no prefix so players do not know if someone else is talking to all or just to his/her team.
It could look like this:
All: Uncle: We have nice weather today, right?
Team: Uncle: Everyone, attack!
or
Uncle: [/b]We have nice weather today, right?
Uncle (team):[/b] Everyone, attack!
or
Uncle:[/b]We have nice weather today, right?
Uncle:[/b]Everyone, attack!