I don't see kick abuse much at all when I'm solo queueing dungeons. It's very rare.

So, if it's happening to someone enough that they're feeling like the system is set up to be exploited, I would suggest that they ask themselves if the system is really the one at fault. If you're getting kicked a lot, it's far less likely to be because of troll premades getting their jollies by harrassing people. What you might see as acceptable behaviour might not be seen the same way by others.