Most annoying group finder issue

People can defend group finder vs rdf until the game is dead but are people so blind to point out the most annoying flaw in group finder?

Why can every class queue as a tank/healer/dps?

Most of the groups look so unbalanced and it’s usually because people never change their role and it deters people from even trying to join certain groups.

This flaw has been pointed out many times. It just gets hijacked with “see this is why we need rdf” responses and gets drowned out as a result.