It's to easy for 3 or 4 guys to take a empty keep if a few minutes, I wish they would let keeps level up to 5 again or even increase to maybe a level 10 keep !!
Personally, I have no problem with players PvDoor-ing empty keeps. If someone is in different time zone and they can only play at certain time then I guess it is fine. What I also is fine is that it gives "easy AP". No problem with that too...
But, what I do think is an issue that needs to be addressed is that it affects Campaign's score WAY too much. I mean, think about it. It is PvP content, right ? But PvDoor is a PvE activity. And if certain faction caps the entire map at "empty" hours (it does not take that many people to do this when there is no defence) it is close to impossible for others to get back their stuff later, during prime time.
In short PvE decides who wins a PvP campaign. Is it just me, or it just... feels wrong, not as it should be ?
If something, ZOS could change how scoring is calculated to minimize PvDoor effect. So for example, if scores were somehow tied to campaign population and scale with that, that could improve campaign balance greatly.
How it could work:
The points you get for capturing enemy objectives are tied to your faction vs enemy faction population. The server will check population difference when you capture enemy objective. So for example, if the difference is high (enemy has 1 bar and your faction is full / locked) then it will be 10x less points. The lesser the difference in populations when objectives are captured - the smaller penalty is. So it could be 1x, 3x, 5x, or even 10x less potential points. In a most drastic scenario, night or morning capping faction will take 10x points less. So, in order to lets say have +1 point for capturing a farm = you will have to capture 10 resources to get +1 point. In order to reset the points penalty, you will have to lose & retake objectives, when populations are more or less equall.
Note: this will not affect AP gain, only potenial points in Campaign's scoreboard.