One kind of important rule, which i have never really seen sorted out for NA vs EU matches. What if the map diference is the exact same? For example EU team wins 50:30 and than NA wins 30:10, then the diference is 20. Using the 'higher points' is not fair, because of map choices. I guess redoing the match is one solution, but what if this goes on and on and you ran out of maps? ^^
I know that this scenario is pretty unlikely (to ran out of maps), but the only possible solution i can think of, is that if teams tie with the point diffs, they should then eliminate the rest of the maplist to leave just one map and play this map on both NA and EU server and play it until one of the teams gets higher point diff. Unfortunately, this could get kind of boring and might be a disadvantage for one side or the other, because if you play the map for the first time, you might be adjusting to the way the map plays, etc.
If Clipz updates his server, than i am all for his servers for these mixed matches. Ping there is really nice for EU. Just for godsake please not uR, i dont wanna play tourney with 180 ping, but i guess they would work for NA vs NA matches.
For the EU vs EU, OTB's have some weird lags as MrPeach said, i have no idea what it is, but from time to time it starts lagging horribly, then it fixes itself and is fine for a week even. So rahter ic3y's servers or JMR's.
For NA vs EU, as i said, if Clipz updates his servers than Prozak's servers and either JMR's or ic3y's
I can host some.
No offense, but your servers cant handle high amount of players. I went to your speed once and i had packet losses every second (it might have been just me, but i went to arctic server after that and didnt get single packet loss there)