b4 the mana was an issue where people had to worry way more bout there mana, this probably prevented people from force logging out to get out of party mana and then just rejoin, u can't even heal outside of party on nm's. but again this was b4, now u can just unsheath and get mana right back.

though u'r thoughs on how bots can claim or people can just hold mobs till people come is a very good thought, i'd rather see no invites while in battle in this case. it makes it so ls's are there or they not, no inbetween. but it is very anoying for regular stuff like grinding mobs and stuff, maybe stuff u can't out of party heal = no invites but simple stuff like leves or grinding we can.