1st i think you are lifetime duelist bad. That being said there is no excuse to keep broken abilities like BOS/Feathers and justifying it by other classes have broken stuff as well. Yes exotic frostshots are more broken then bos, but yet again that talent is there just because of bos and feral shapeshifting (which is even more broken then bos). Remove all 3 problem solved.
1.) Bad-mouthing doesn't make your arguments any better.
2.) In the text you quoted I justified nothing. I talked about the fundamental approach to pvp design.
3.) Removing or nerfing (or buffing) some abilities changes the power of certain classes but does not solve the overall problem. It just shifts which specs/classes are too good, which are average and which are bad.
4.) In order to achieve balance you need an approach that can deal with so many specs in pvp and keep them balanced but diverse. Simply buffing or nerfing some abilities doesn't achieve that.