I shout for pugs to join us all the time and I frequently loosen my restrictions so I can hurry up and get into coil. If you are too picky with party composition in a pug you are going to be waiting in wineport for a long time. I'm not saying it doesn't happen but groups who do that are probably idiots to begin with.
And you're right BLM really doesn't have it tough. Try pugging as a WAR tank before the patch, people seriously think they can't do 1-4 with a war tank even as off tank. They are the ones who are really going to love the changes.
For the record my static runs a WAR tank purely because he is incredibly skilled and I'm happy to pick him over 90% of the PLD on the server. Merit over composition.