I'd like to see private lobbies added as a feature of the new BGs.
This would be the single biggest thing ZOS could do to widen the appeal of PvP in ESO.
There are heaps of nice folks out there that PvP.
There are equal numbers of folks that are a disgrace to the human race.
This isn't an ESO thing - every PvP game (or PvP-containing game) dredges up the kind of people that make you wonder about the future of the species.
Private lobbies would be excellent for building up communities of PvPers that can have fun and hone their skills without ever having to deal with griefers, idiots, toxic whisperers, and all the other wonderful members of the menagerie of the questionable creatures that step into Cyro, IC, or existing BGs with the sole aim of degrading and humiliating other people.
Make private lobby games have no achievements. No earnable currency or alliance rank progression. Just raw fun. Make it an extension of dueling but linked to the new BG model.
Many other games have them. This shouldn't be a coding issue. In fact, the new PvE 'looking for group' tool probably goes half-way to making it happen.