My 2 cents .
Even though you have obliderated me in a single full stun/combo PvP, which at first I thought was insane, because there was literally nothing I could do to counter, being debuffed - perma stuned/silenced till death.
- Considering the overall picture.-
In my opinion I do think concerra specifically (not vs) needs a very slight buff to the class.
From your suggestions, I vouch or agree with your chakras slight boost, not boost of damage per se/ skins of foreign realm /or pet, because this might direct CS to a god tier class situation, lacking only full invulnerability, but having speed and invisibility, among other abilities to counter.
Yet, I understand that this suggestion might go against the past rework of the class, which even though it was not to my full preference, I completely respect and admire the rework, since it was difficult and a huge task to rework it the way it was done.
When I mention my personal taste or preference in the rework: I mean that I loved having the circumstantial add of trying to land combos inside chakras (if im using cs or vs) or if I was fighting one, having to try to lure them out, I was thrilled by that aspect of the PvP.
Final note: I sense from this post and replies, inconformity with fighting certain classes or circumstantial scenarios, in this case I believe we have to accept that each class will always have situational weakenesses that shouldnt and cannot be overcome.
We cannot at any moment hope to have a class that will have the perfect counter for every posible class and scenario, you just have to choose what you love the most and accept the drawbacks of the class.
I think we all tend to be lured to this type of thinking that should be avoided for balance purposes.
(@MasterD explained this last point pretty well)