I started a lvl 14 and i already checked my 50 they didnt make it impossible to solo you just have to change your strategy. It's not all zerg now its right gear right skills.
Don't mean to sound rude, but you're full of crap if you didn't notice mobs hitting harder at rank 14. I never said they made it impossible to solo, it's just painfully slow and inefficient now. It's not at ALL fun, and every single battle feels like an endless grind.