Osas, and Fecas, dominate pvp simply because of their metas. Fecas and their insane amounts of resistances, and shields makes it extremely overpowered. The only thing that does significant damage to them are those abilities that dmg them in the beginning of their turn. Srams are fun to fight against with, they're balanced perfectly, once the other classes get their revamps, things should be on par.
Team PvP is definitely more balanced. But, until the remainder of the classes are on par with the newer revamps, balance will not exist.
3) So, so.
The only significance steps I've seen that improves what's in place is that nerf they did to Feca shields, and some Sadi/Osa fixes. I feel like they only focus on those 3 classes.
4) Definitely positive. I'm thankful for that change.
5) On Nox, you can see a split of players that prefer PvP, and PvE. PvP is pretty active, team fights are set up when needed, and when players are online. Rivalries are also in place.
6) Other than balance? err.. Faster revamps. And definitely another way to gain glory orbs, maybe through Arenas, or PvP challenges. To unlock the higher end PvP gear, it seems kinda impossible to reach 16k orbs to obtain a single piece of that gear.
7) Hell Yeah! I would love it. Non-stat pets would be cool, with some cool effects while they're on different stages of their growth. Maybe, non-stat gear pieces to wear around instead of wearing costumes.