I just found this thread and still need to read through all of it and the other LCB thread more carefully.
There are some interesting ideas out there and many things that would make stuff more interesting for PVP, but if I had to select one thing that would in my experience make PVP better right now, it would be to fix the broken offline claim modifier.
The boys at Ground Zero run a nice server and the rules keep most griefing in check. Most of the examples of blatant greifing from this thread (jailing the starting points, reducing a base to rumble, undermining a base, etc) would never happen on the GZ server because the players who did that simply wouldn't be allowed on anymore. However, it would make the PVP dynamic so much better if the LCB's offline modifier worked properly. I'd even be cool with it if the LCB ONLY worked while offline. That is, no LCB modifier at all when I'm online, but make it invinsible while I'm offline (or, at least, give the server admins that option again).
There isn't any skill to raiding a base while the owner is offline, but if you can do it while they are online then you have got some skills. Unless TFP decide to completely overhaul the PVP mechanics then a lot of the ideas in this thread may just be pie-in-the-sky. If you join a pub, expect it to not be a great PVP experience. But a few minor tweaks can make 7DTD a fun PVP experience on private servers where that server's rules are clearly defined and enforced.
Admittedly, I'm more of the type that figures you have to have another PLAYER if you are doing PVP. I don't think it is PVP if it is you against another guy's base.
Just my take.