i am sorry OP i do not think this idea is very good later level stuff let alone running from one area to another in the 3 hours you wouldnt do very much also with your idea in place imagen the duty finder "oh sweet i got a team" -gose into the dungion- "HEya gu~ crap the tank and healer got forced logged",

a AFK timer takes the time someone is AFK then boots for takeing to long to respond this is resonable but your idea will kick people during cutscenes battles fates instances quests duties and aligencies, making it a moronic idea