Demigod is really a gentlemen's game. It requires effort from both sides to create a fun game. The entire community needs a period of detente to end the Cold War build up where one side chooses UB, the other side chooses UB, one side chooses Oak, the other side chooses Oak, until every game ends up as Oak/UB/Erebus.
Random games are bad ass fun. The "the worst could happen therefore I won't" attitude is no bueno. My brother does that for life. "If I learn to ride a motorcycle, I'll end up buying one and then get run over and be a paraplegic for life, so I don't want to!"
SOME random games go badly, with the DGs and teams being out of whack. There is ALWAYS a period of fun, though at later levels, it may fade as the numbers build against you.
MOST random games go well. There is little effort to check everyone's ratio, balance (cough, whine, cough), etc. Decent players on both sides that claim they can play any DG. Then the rule of averages works out for us. Most games are strangely close to DG balance. Some are very off, but then the players make up the "numbers". The easy mode team gets lazy, selfish, and cocky. The 3 regulii team gets desperate and communicates.
That's when the fun happens. That's when guys give away money to each other, make one a decked out killing machine with orb of defiance (nuke protection) while the other 2 uni gadget him from behind while throwing mines, demolishing one enemy at a time. Sometimes you still lose; sometimes you win and that win is worth 10 "good games" of super balanced teams (cough), optimal builds, T1 dgs, etc ad nauseam.