With a group of the 3 classes and maybe 2 wars (I'm biased) you won't die constantly. I know people forgot but maybe time attacks and wait for a shield before rushing up to the bosses. Even better let the war do a thing called pull and take aggro with you dps types stand back and snipe. Everyone is so used to just attacking everything with out a strategy they die. One of the solutions to 4 dps party was to make the expansion harder so you need each class. I actually like what they did. It shouldn't be easy to nuke the hardest maps with old gear. How hard is that to understand?