We started a new game about a few weeks ago, and everything has been going pretty well, but my DM has gone back into doing something that made all of his players (including me) quit his last game, and we've brought it up to him a few times, but he hasn't really changed anything, so I need some advice on what to say to him.
His problem is that, even though we are suppose to be the people who save the world (Really we just got hired on to do a job and got brought into it), he introduces characters that are around 4-5 levels higher then us as our allies. But the issue is they do nothing, either they just don't do anything and stay behind us the entire time, or we ask them to do something, during which they go off and die to a single enemy that we basically just steam roll over. It has come to a point, that we as the characters don't even feel the need to help the world, because even though we are lvl 8, there is a lvl 12 mage, a lvl 10 fighter, and a CR 13 Angel that are working for the same thing we are, but don't do anything at all. Mind everyone, that the problems happening are suppose to 'destroy the world' if people don't do something about them.
But as I said earlier, I would like some suggestions to him, or how me and my friends should handle it as a party.