I really like this its the first sensible balanced thing I have heard in ages !
One of the ideas that has been mentioned which I think might be a nice first step is making the T3 hexes open, no-rep, PvP 24/7 and closing down the nodes there during escalations.
It would be completely avoidable (placating the rabid anti-PvP crowd). It would add some actual risk to all of the reward that is stacked in those hexes. There's no owner entitlement issues, as you can't claim those hexes with the current holding system. It would reduce breaking gear issues, as the shrines are not locked in those hexes. It may actually address the strip mining issue if those people had to compress their work into random fallow times. Aaaaand, I think it might be about the easiest change in that direction as far as coding is concerned.
It might address some of the new player issues mentioned. The escalation hexes near TK should have the same system. Completely avoidable for players, but it would allow some PvP on equal terms (not so much T1 v veteran). That may help with the wait for T2, which actually isn't all that long if players are having fun. Most importantly, it would be a fun source of content for many new players that turn away because PvP is all dried up or tied to bad systems.
I don't have much hope for factions fixing any of these problems. If they work for allowing open PvP between factions x and y, the anti-PvP crowd will rail against them until it is watered down or gated. I'd like to see some actual incentive added to holding warfare (almost no incentive for any side currently) and, dare I say it, some sort of effect on settlements. Those ideas are way down the line, but I'd like to see something like that happen one day.
This is one of the main reasons that my big question for the keep side today is, what are the top two or three items on the to-do list past EE11. Heh. Repetition, repetition, repetition. Settlement mechanics are finally done-ish, PvE is done-ish, crafting is very strong, player economy is done-ish, open world PvP is laughable. It's GW's decision on where they want to take the game, and I think there are a lot of current and potential players who would like to know if they still want an open world PvP game or not.