In a number of casinos, specifically ones that are incredibly full of items and/or somewhat psychedelic looking, I'm sometimes having two difficulties:
1. Finding the NPC in the casino I need to talk with;
2. Clicking the NPC because it's in front of a machine or the exit door.

Would it be possible to tag the NPC somehow (maybe one of those coins that the mission givers have), and give priority to clicking the NPC if and only if the mission has yet to be completed in that casino?