Brief version of thoughts:
Hero(ine) gets to bring one pet into battle, just like in PQ1, and get access to a player version of the pet’s PvP spell. Nostalgia super low-hanging fruit, as well as allowing players to pick a restricted set of “wildcard” pet spells for diversity of builds. Good time to do this as well, while you are reworking the spell system.
There aren’t any plans to make the hero(ine) meditate in the spell book for spell mana, is there? 
… (I’m old 
)
Yeah, many in-game systems are easily breakable. For example, tier XX guild daily dragons were surely not meant for 2-3 players to duo/trio (with the occasional lucky solo). Players reaching millions of armor/resistance in combat, guaranteed weapon crits, and so on.
Hoping the Team is seriously looking at the core rules mechanical weaknesses (and not just band-aiding the situation via gear nerfs) that allow players who have a sound grasp of current game mechanics to leverage spells/gear that affect those core rules weaknesses to do things they aren’t likely supposed to be able to pull off in-game.
Also also, did the blue-haired high-elven archer get backburnered (or is imminently being released with the PvP update)?