If two people on a team are only queuing with the intent to troll, they only drag down two random people. Whereas currently if one person does it, they potentially drag down three people. Or worse, they themselves get carried higher, rewarding them for their antics. Situation A does not get rewarded nearly as much because it's much harder for 2 people to carry in PvP while 3 people can still do it.

And on the flip side, if two people who know how to do their class queue together with the intent to succeed, their chances are greater because they have a means of communication better than the stupid automated message system we have now. Whereas right now, it's literally cross your fingers and pray each time with a higher risk of being hit by trolls.

Either way, whether the duo have the intent to succeed or troll, the damage is less. Is that thinking enough for you?