Turning off juice machines makes almost every game go into overtime unless the teams are very lopsided. Once the game gets past the midway point and everyone has their skills upgraded, all the money has nowhere to go but turrets. Without juice machines, it's ridiculously hard to counter Lv3 rockit turrets, so the game just stalemates until overtime.
server admins should just enable Juice Buying and disable Overtime to compensate. Look at my servers, some great matches going on there with these settings.
Guess what, I'm not playing there. I play on default servers even if it means not playing for 10 minutes just because I need to get in, crazy innit