The biggest issue by far right now, I would say is the source point abilities.
With a source point as rogue you can teleport behind anyone and one-shot them in one turn. You get an initial double damage with the source skill, then you also gets 500% bonus from being invisible or sneaking (which only costs 1 ap to just pop behind them) and then finally you get the backstab bonus. This one shots any class with full armor and can be done easily in one turn, especially with adrenaline.
I also saw the warrior source skill almost oneshot someone, and that one is ranged aoe.
