Plink, 2v2, and balance

1. Is there a reason that plinks rounds lock onto enemies and track them? His weapon has a big shot spread but in all my experience so far he never misses a shot due to his rounds tracking enemies so why not just make his weapon shoot straight and not track enemies. I've played kayi and used her sphere to slow down his projectiles and watched them travel in full circles to follow me, his are the only ones I've found that track enemies. He's essentially a laser beam even across map because of it. 2. Can we ever expect a 2v2 playlist always having to carry a dead weight random is pretty annoying. 3. Can we ever expect to see a fix for when a teammate disconnects and is unable to rejoin, 2v3 match is almost a guaranteed loss have won a few but in a game like this being down one player is a big disadvantage.