This is downright absurd suggestion and one of those wasted post that gets ignored. I had high hopes you would come up with a good resolution but no. Immaturity is all I read.
Why? Because there are people with RL responsibility. For instance, a player who has a child who suddenly falls. They are considered "AFK" and gets punished for 4-5 hours? I hope you enjoy your 4-5 hours queue for this absurd suggestion.
Instead: I hope the AFK timer goes down to 10 minutes. At least TEMPORARY until the hype dies down it can go back to 15-20 or even 30, however, I really advice SE to really look into the 'cheating' how to remain logged in whilst asleep.
Cutscenes - people can AFK in one dialogue for 8 hours and it assumes it's in cutscene, false. Go to an inn and play a cutscene, way to go congesting the world. Speaking to an NPC.
I think the most important thing is; whether cutscene or not. If there is no interacion with mouse/keyboard after 30 minutes ir should boot because there is no cutscene that you'd auto-play that'd take 30 minutes or longer.
This would automatically if I consider it correct right where if you speak to an NPC and have a junkmongrel's vendor open or speak to an NPC- if there is no interaction with it, or summon bells, after 30 mins it should boot people out.
I hope this is a thing