One thing I would really like to see changed is how sorc summons work. It would be nice if sorc summons would remain active on skill bar flip, so that they might serve some sort of purpose in PvP. Even then I don't know that they would be very good, but it would at least give sorcs access to their third skill line as a potential PvP flip alternative. Currently, everything is better than pet builds. The only potential exception with regard to PvP pets is volatile familiar (although I have yet to be able to find a build that uses it effectively in PvP).

Ideally it would be good if pets also got a tactical buff.. Their response times and movement speeds are far too slow for PvP.