Right now, these current devs hold the power in their hands as to either a) accept RvR basics and just continue to work towards enabling as much more content as they can - ie complete all towards T4, or b) focus on T1 so that all of the other game elements that are presently missing can get focused on including experimenting with alternate ideas in the "lakes". I firmly believe Mythic messed up a lot by putting what really amounts to very little effort in that aspect of the game.
Later in the game Keeps come into play in RvR as important components of gameplay, which are 'added' to the lakes. They really help to act as a fix, though to the somewhat stale Capture system as it is. That is why I am thinking to maybe look at continue work on the RvR game in the lakes. I think currently it's hard for the system to function well in off-hours situations and the meaning for capturing zones is not great.
Some of the most interesting gameplay I have seen that remedies this has been done more as special events than experimental features or fixes to RvR. Live Events had really made new gameplay many can remember those times, previous events in the lakes which add whole new factors to WAR. These events are/were really special all in there own but I also think lessons to be learned about what makes RvR RvR. Mythic really gave us a very basic sandboxy game with a lot more potential to be more successful. Something that can be a better live experience in a more continuous fashion. Even in mention is the Dwarf event at the end of days at EA warhammer.
- Instead of useless quest NPC at BO - replace with meaning full NPC tasks which are more freshly thought and integrated
GUI fixed for the Capture mechanic so it is not such a big mystery
Scenarios more integrated and working out the way everybody can take part in the Zone Capturing RvR war - remembering how the RvR status was updated on the website was really cool. So that looking on the website you can see which Realm is winning etc.
Maybe look more closely at BO capturing such as multi-staged capturing at the flags so that players are more involved and activity at those times can factor in more instead of kill quests or silent stealth locks
renown that builds up at BO's
siege weapons
monster plays
crafting and teleports
rewards (gear)
RvR currency
skulls of the fallen
Trophy taking
hot items in RvR (eg Orbs of power)
AAO
ToK achievements
etc