Quote Originally Posted by Warlyx View Post
priority mobs > npcs > PARTY MEMBERS > others PCs
I agree with that priority list. Though I'm not sure if mobs should always come before NPCs. Actually mobs you're not trying to engage with often get in the way of interacting with an NPC. It's only bosses and hunt marks that you want to are really important. I would say the following:

Boss/Mark > interactive NPC > mobs > housing items/environment > party members > friends > non-interactive NPCs > all other players