im already playing my paladin solo and have been for a while now. He is tank/dps. Both specs are all icc 25 level gear and a few 25man heroic items. He can solo some of the normal 5 man heroics. There are a few bosses that are impossable due to mechanics like Kelseths iceblock etc. You are frozen the entire fight and just die. basically he is now where he can solo what used to take a full group.