@Worldbeing keep in mind that a 25 hour game is too fast in my mind (I prefer 48 hour games). I've changed someone from a super-loyal ally to my enemy to slightly worried to completely paranoid to my ally in 1 turn.
It was a spring turn and his ally had built one army.
It took all of the 2 day period to do it, but it was done. That style of tactic can't happen in 10 minutes, unless you are face-to-face...
The game isn't "send message, get reply, confirm, update"... it's "send hint, drop a few more hints, see the response, work off the the response, go back and forth a few more times, adding in more details, convince the country" and you are doing this with ALL the players.
Hell, the time it takes me to type this message, you read it, and respond to it, 8 minutes are up (and that's if you read it the moment I hit 'submit').