I figured that I'll add a suggestion since I'm currently thinking about it. Every pvp mode is going to eventually need this, but this is for the upcoming mode personally. I am also going off on a lot of assumptions based off the information that's already there.

I would like to see a custom mode added for the new mode just for premades...kinda like what feast already has. I see the new mode consisting of a full party, but I also do see the restriction of how many can play together in a group, kind of like what frontlines currently has. It's to help with the catering. (Plus I personally miss seeing full group premades go against each other, but I don't feel as though that's important. So...)