I think this is cool, but splash monk/rogue and pali in a lot of classes and get an ultra survivable dude. Heck, just splash pali and you get very high survivability. For example, splash 2 pali into a warforge sorc and get survivability and high damage potential.

Why do you need so many hitpoints if you can self heal and make every save on a 2? Drop many resources spent on hitpoints and improve other aspects of the character.