Three questions from a new warmane player

Hello, I have a three questions regarding PvP.
1.Are there any plans to disable that stupid cross-platforming on Lorderon with the "Blackrock" fun realm? Or is there an option to disable cross-platforming? Doing a BG or WG with people who start with a full set of relentless, etc is ridiculous.
2.Another question: is there cross-platforming in the arenas? I don't really feel like playing with people from the fun realm.
3.And one last question: is it normal for players to multiplayer on this server in PvP? Greetings to everyone.

1. No. No.
2. Yes.
3. Yes.