It isn't terrible, they will realize they need a different play-style completely with different skill tree's anyway. Let's agree to disagree.
CC's are among the easier problems to fix in PvP mainly because it doesn't effect PvE that much. Having PvE and PvP balanced at the same time is a different task (see Unload example).
WoW's PvP is still far ahead of Swtor and is still very bad. But would you then agree with the statement: "Sometimes some specs will simply not perform well in PvP, even if it's your only DPS tree" and you are fine with that?
When they release the rankings, people will not be so happy if they start bounce up and down with every patch. The question of your own skill will be more confusing then separating how abilities function in PvE and PvP.
No real comment here besides what we already disagree on.
PS. Just to say it, I am not whining about Swtor, I am just trying to give my 2 cents. I believe that minor things like mechanic bugs, CC's etc will be tuned rightly given time because I believe in the competence of BioWare.