Considering that I gained +50k renown over this weekend on my burglar I'd say that I still enjoy him.
Burgs are a lot more challenging to play lately. I played my Warg a lot more before he got ezy-mode. Now freeps run from him.
Whereas on my burg the ranked creeps tend to want to fight now! When they used to run away!
Progress demands development of individuality; mediocrity seeks perpetuation in standardization.
In all honesty I still dont have any trouble killing wargs 1 v 1.
The only real difference after update 6 is that if several wargs are on me or if wargs jump me while I am killing something else I need to hips and go sooner rather than later. In particualr, before update 6 if i was killing a creep and wargs jumped me I could finish killing the creep. Now I need to leave before I kill the creep.
In response to the OP: No, Im still playing my burg and doing fine. (My spider is also a lot of fun now.)