Claiming mobs inside a dungeon

I understand that the claiming system is being reviewed. This suggestion may already have been discussed, if it has, I apologize.

I propose that a party in a dungeon receive full EXP and SP from enemies. Engaged or not engaged.

We are the only party in a dungeon. We will not conflict with other parties claiming the same enemies. Area attacks may become more appealing to party members. Namely applies to pairs or clusters of individual enemies near each other.

Thank you in advance for reading.