I am not a part of the raid scene. Disregard anything I say. My opinion is there are three choices.
1. The rules that the guilds have right now.
2. FFA first to engage with ks'ing leapfrogging still camping.
3. A calendar system of reserving days in certain zones/mobs. I found a link to the calendar system from back in the day from luclin server. This is also a lot like rotation that people had and didn't like.
http://web.archive.org/web/200101241...om.com/luclin/
I don't think there is any real answer to the raiding problems. Most raiding guilds would like all the raid mobs for their guild. DA and Ib will go to extremes to get the raid mobs under whatever rule system is in place. Soon other guilds will join them.