Very good suggestion. While most games do have warzones, battlegrounds and such. Theyre fun for me personally, but the competitive nature of ranked PvP in small groups is what i would like to see. Mindlessly queueing for a warzone/battleground does get old. Staging your guilds best against others like minded brings streaming(ppl do watch pvp streams frequently) and its something to do when Cyrodil is not being attacked
If they can pull off the PVP in Cyrodiil that Darkage of Camelot did then you will have very good competetive group fights. I am assuming you didnt get to experience this. It was called roaming 8man. your group roamed around looking for other groups and to this day i have not seen a game bring the competetive fights that it had. Yes there was zergs, and solos and other groups interfering at times but most of the time you knew where to roam. once you saw death spam in chat or got word of who's group or what guild group was out there it eigther made you scared or the arenaline of tracking them down for the kill. the unknown of the massive PVP area gave it a twist that a small Arena could not. tracking and seeing dead players and kill spam just made it so much better. Also the capaigns are like servers, so you will be seeing the same enemys in the campaign, so you will start to know who is who. the PVP reward system let you keep improving your character for years so there was always incentive to keep going.
It is very hard to describe roaming 8man and just DAOC PVP in general to people who never got to expirience it. the seiges / defenses and the stealth games were also amazing. Cyrodiil looks to have the exact same setup that DAOC frontiers did. Some of the head DEVs are coming from DAOC so it think they can pull it off. If they do, you will be in for a treat and might not care for arena fights at all anymore