I say go back to FFXI's claim system, whatever you claim in party is red and can give you SP/loot... since they are going to 8 man parties, bring back the option to add parties to an alliance.
Also I'd like to be able to add an LS member who just came online in the middle of an end game event/fight. I believe the reason you can't add people mid fight is to prevent people from dropping from the party and touching the Aethryte to get HP/MP back and re-joining... so just take away the ability of Aethryte's restoring HP/MP. Now that there is auto-mp regen it shouldn't be a big deal. I would still keep the ability to restore HP/MP when you launch/finish a guild leve but I would say nothing outside of that and give us the ability to add players/alliances mid fight.
This way if a party needs help you have the option of adding more players/parties as needed.
Like most of you I hate the idea of anyone being able to attack any monster claimed. Seems new and challenging content would just get zerged. Imagine seeing a brand new open world HNM roaming around and every high end linkshell gathered around to check it out... all engaging and just overpowering with sheer numbers...
The system worked almost perfect in FFXI why not bring it back??