At the moment I see a lot of uninformed discussion related to RvR. Especially attacking/defending keeps. As a guild on Sunday we 'tested' whether or not you could actually take a keep. Allow me to elaborate on some of the issues we encountered.
The main concern with keeps is that it takes 1 WB, 3. Yes, 3 hours, to take both doors down. (without ram) That time scale does not include time for fighting counter attacks/pushes from inside, or even oil killing all your melee in cca 3 seconds. It even depends on relying on other people defending BO's. This is calculated by my WB taking 1 minute 3 secs to take down 1% of door health. (Shock Horror the BWs were specced ST

)
When it comes to taking keeps. We should definitely be rewarded. No question. My personal feeling is that you should get a lockout timer from receiving bags/tokens. 6 hour one. If you take an empty keep... Well. No, no you shouldn't get loot or lockout. When we talk about BO's, rewards should scale effort. If you cap an empty BO, gg thanks for helping the zone. If you defend/attack a BO and there is some fighting. Hand out an AAO scale RP bonus for kills. More kills, bigger the tick. I feel we now have enough GMs that after a few incidents of kill swapping (guaranteed to happen), It will get reported and cleared up.
With the current system (yes, I know its going to change.) You can spend all that time taking a keep, take all the BO's push the zone, only for the opposition to lock the BO's in the next zone and you are back in the zone that you spent a lot of invested time capturing. Then you go back and take the BO's only, you keep the keeps, then it locks. <<< This Paragraph explains why you can't have medallions for locks.
I'm really not sure what some people talk about when they mention undefended keeps. Honestly, I have not seen people initiate attacks. Defending is the easy part. Attacking will only get harder the more people on the server. I'm 100% sure that even with the order zerg on Sunday if PF+Pug was defending that keep, the hour to get the first door down would of been wasted. (If they had oil up.) With no counter at all to get in. The only way that will change is if we can somehow add more entrances to keeps. Or a cheesy Knock back aoe cannon, but I really don't like that.
In conclusion, I don't think you guys need to fiddle with too much. It's always going to be down to players to not zerg, or join guilds, or make WBs. If they don't, well, not much you can do about it. Dropping the door HP by X% and maybe make attacking siege weapons X% more dmg to doors would be a decent interim fix to try to get zones moving again. Even if rewards are just kept as they are for now.
P.S wipe merc gear to piss Ade off please.