I'm tired of games where I have a teammate AFK for the first 2-3 minutes of the game, costing our team ~100 points, and then coming back thinking it's "Ok."
I'm tired of games where I have a Nunu or Mundo building either pure AP or pure health (respectively and literally) and thinking they actually are contributing to the team.
I'm tired of having AD carry teammates who build 2 attack speed items and then a chain vest because they can't live long enough to kill anyone.
I'm tired of having AP caster teammates think a deathcap is a luxury item and that they need both tear and catalyst before building a single point of AP. (And no I'm not talking about Ryze and this happens in about 65% of my games)
I'm tired of teammates who think the proper way to fight for an enemy tower is to continually charge at the defenders until they've done enough damage in the 4 waves of respawns to kill them rather than simply pushing the minions.
I don't know how many games I've just given up because I have 2 teammates who've somehow managed to die 11 times in 11 minutes. That means they've spent half the game dead. I didn't even know it was possible before Dominion.
I don't want to sit through 20 minutes of futility because I have a jerk, moron, or mentally handicapped teammate. Oddly enough, I think most mentally handicapped people could probably play better than some of the people I've run into.
In Dominion, a 4v5 is even worse than Summoner's Rift (even for just 1 or 2 minutes), because things snowball faster due to the fast respawns and free gold. I only think it's right that since Summoner's Rift has a 20 minutes surrender that Dominion has a 10 minute surrender since that's roughly half the average game length.
Riot, please give us a 10 minute surrender for Dominion. It only makes sense.