A few clarifications before I actually get a write-up I'm happy with:
(1) The 6 man claim is intended for those times two raids/guilds are racing to get to the content to make claim. First to 6 wins.
(2) If there is no dispute, that 6 man claim can hold until the next patch. If there is nobody wanting to dispute the claim, the staff really wouldn't care if a guild sit in and claims Grobb Undercity for 8 days.
(3) If a dispute is made, the argument is that there isn't a raid force for claiming. The group whose claim is disputed has 30 minutes to finish assembling their raid force and start raiding. Having a group kill a duoable trash mob is not raiding, and if it's in an attempt to stall for time, it's squatting.
(4) If the dispute is over which raid got there first, that's a different issue altogether, and a GM can determine that.
(5) If you are wanting to claim a zone hours before your raid starts, then you better be able to have a credible raid force within 30 minutes of another raid suddenly appearing in your zone and for all you know instantaneously putting in a claim dispute petition. Abusing this system to create a repeated 30 minute inconvenience for a rival raid/guild won't be tolerated for long.
(6) A group killing trash doesn't have priority over a raid wanting to raid. This even has Yclist precedent with FWF members hunting runic spell pieces were asked to leave to allow a guild to raid that area. It's worth noting that a polite agreement about leaving certain trash mobs up during the raid for the FWF members to kill after the raid was finished was reached without staff encouragement (though the staff was encouraged by this gracious gesture of general SoD good will).
(7) If two raids are both attempting to claim something that isn't up yet, the situation gets more difficult. If there's nothing to claim and more than 1 raid wants to claim it, all parties involved will have the distinct pleasure of dealing with whichever GM has to handle the petitions over the claim of something that isn't even there. I have a few ideas on how I might handle this situation:
(a) /random 1000 -- it's quick, it gets the job done
(b) Shut the zone down -- nobody wins! Maybe the two raids will settle the next one with compromise, sharing, a spitting-for-distance competition, or even a /random 1000 on their own the next time.
(c) Lock the zone so nobody else can zone in -- both raids if they want to maintain a chance at claim will have to use only who is already there. Also, every player would have to maintain attention to the screen to be able to respond to AFK checks done in /shout randomly by me. After all, they're fighting over a mob with a random component to its spawn time, they need to be ready to go at a moment's notice. Any characters failing to respond to an AFK check would get translocated to bind (and then be unable to come back to the locked zone). If both raids still have credible forces when the mob finally spawns, then /random 1000.
It is the desire of the GM Team that most situations be handled with levels of friendliness, courtesy, and maturity that really aren't found on other MMOs. To that end, petitions like the ones described in (7) are viewed as things to be discouraged. If we have to handle "doesn't play well with others" petitions, it's not going to be a fun experience. In the case of victimization like harassment or griefing, the unpleasantness goes to the victimizer. In the case of both parties unable to work together, it's going to be all around unpleasant.
The vast majority of raid claim issues in the 14.5 months of my tenure as Lead GM have been handled with minimal staff intervention needed. I'd like the next 14.5 months to be similarly pleasant. If that means that making working these issues out without staff intervention look better by making the staff intervention on these specific issues unpleasant, then I'm willing to do that, and I've built a GM team that is capable of carrying that out. Fortunately, I think much more highly of you as a whole, and I don't think that making any of this unpleasant is going to be necessary. Even the recent Exodus / Chaotic Winds / Ikisith Main Quest Progression Raiding situation is one I think will be handled pleasantly despite some recent drama. Prove me right.
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TL;DR What Slaar said plus words. Also a few compliments for most of you.