Matchmaking without the Trinity: how would you do it?

[Saccharin]

Hello! Lots of people on these forums are eager for classes to break the mold, be more diverse, more buzzwords here. In short, they want to see a departure from the Holy Trinity of Tank-Heal-DPS.

Sounds great, sounds fun, sounds innovative. The issue is things like the Duty Finder. How do you put a funky hybrid class into the formula for making a balanced party?

I have no idea, which is why I posted this thread. If you were making a class for this game that broke the Trinity, how would you handle matched parties?

GW2 proved that the trinity is needed for interesting encounters.