I have noticed, now that the 16 day timer is past that the pop on the Wabba server seems to be flooded with vast waves of AD. I have also noticed at a few keeps that AD and DC were working together to push EP out of the lead spot. It is sort of flattering that this type of tactic needs to be used to get ahead of EP, but also sort of cheap to resort to it as well.
I have reported a bug to the ZO administration, as well as a few friends of mine on a bug with party joining Cyrodil. Abusing this is getting ppl to receive all benefits of the server without guesting restrictions. I also want ZO to look into this bug, because (not tested) but it seems it could allow players to join Cyrodil without a pop cap being enforced, thus leading into a faction having way more players on the map than others causing unbalanced battles and lag central.
I have talked to numerous players about guesting. With the way it is as of now, a player can be homed on a server that is high pop their faction, gain the benefits of being the lead dogs on it, then guest on another server to throw a wrench into the hard work and time put into getting a decent spot on the leader board. This basically (when done organized) can caused one faction to have a 24 hr push on any server they choose to troll. Now this is just a toss up, but wouldn't it seem more plausible to have guesting on a server to be a one time thing, or at the least once a month? To have it every 24 hours means that certain guilds and alliances between factions can get together and dominate. To allow guesting in a perfect world would mean people would actually use it to guest on the server to see if they like it to join it. This isn't what is going on though. They use it to create a constant population on multiple servers to monopolize a factions leader board standings.
Whatever you decide on this matter ZO is all up to you. This happened not too long ago to a certain game called Guild Wars 2. They started off having a 24 hours server switch on their WvWvW servers. This caused the dominate faction to crush every server, which in turn, caused factions to start making alliances with one another to get points. It in a nutshell ruined the whole PvP aspect of the game. Then caused a massive influx of players to leave the game entirely because the WvWvW buffs received helped out in the PvE side of the game.
This isn't an EP AD or DC centered request to nerf. This in whole is something that would help all factions. I have noticed that the player base on here seems more driven to help on bugs and exploits (with the exception of a few on all sides) than other games I have played. You will always have someone out there that will try to beat the system to get ahead. I like the game so far. You have a nice flow of fixes and patches that help keep the content going.