Has anybody been complaining about 3s matches being too long? Wizard cleave vs Wizard cleave is the only comps I can think of where this is an issue, and even then the game instantly ends the moment either team decides to push in with 50% reduced healing at the end of a game.
After some additional discussion, we've decided to make this change only apply in the 2v2 bracket. Dampening will remain at 10 minutes in 3v3 and 5v5 arenas.