Remathilis
Legend
Tried it. The Squishies didn't make it one round and the fighters duked it out for a couple. The barbarian won because of high HP and rage resistance.If that's truly the case then perhaps the game has designed PCs to be too powerful relative to their surroundings - and also relative to themselves.
Interesting exercise next time someone can't make a session: have the other players take their characters and (completely outside whatever campaign you're running - this is just for kicks) have 'em throw down against each other in an arena-style setup. See how long the combats last. Maybe it'll give you some insight as to how to fix their glass-cannon-ness without just adding more hit points...or maybe they'll be more resilient than you expect.