There are classes that are counterproductive in PvP (like Slayer which makes Orbweaver defenses even more effective) and yet while many modes have their own distinct team slots, PvP does not.
Pets rescues have their own team slot. Raid boss has its own team. Delves have their own slots.
At least 10% of my losses come from team switching accidents because PvP, adventure board, GW, and explore all share a single team slot. So you could say it goes on my “permanent record”.
This game is not a primary activity. It’s the kind of game you can do while you go for a walk, or watch TV. Otherwise, I couldn’t afford to spend as much time playing. It would be nice to have one less thing to have to worry about. Please at least do a seperate slot for PvP, although a specific slot for explore would be good too.