Elder Scrolls Online developers are testing to bring back 900-player Cyrodiil PvP by potentially having separate abilities for PvP and PvE.
The decision to reduce the number of players in Cyrodiil was made due to server issues caused by the number of abilities available to players.
Recent testing aims to revamp the ability system specifically for Cyrodiil, with the potential return of three teams of 300 players to the zone.
This renewed focus on PvP, ignored for some time, is facilitated by the shift from massive chapters to smaller seasons, freeing up development resources for experiments and improvements.