going by what I know and have seen of either parties work, I must strongly disagree.
they could sticky-tape-hot-glue-adjust PvP to a workable state, probably yes.
the NST would be able to do the same if they wanted, but they chose not to (personally, I believe it might have been worth the distraction just to ease the pain for players while the long term balancing changes are being worked on behind the scenes).
they have chosen to fix the underlying mechanics, which is more in line with their announced agenda of putting effort in long-term solutions, rather than quick fixes. I don't want to put words in the mouth of the NST, but I believe they looked at the 2.2 project and the intention behind those game-breaking changes - to create robust, future proof balance mechanics that make it easier to introduce new items and tweak balance without fear of unwanted side effects.
as much as I stand behind this agenda in general, I very much fear that the amount of work required to pull this off is beyond what the NST can contribute and I don't think that crowdsourcing the effort will work, due to the complexities involved.
I really don't believe that the people working on the task are the problem.
There are extremely(!) capable tech guys and extremely committed contributors among them.
I fear that the task, as has been set by those people, could just be too grand.