Yes i understand that and it's why there is a 30 minute timer which is more than reasonable. I believe the housing servers and Island servers are the same so yes housing does affect the Island as well if you afk in your house if I'm not mistaken. I don't see the issue really. We had a 30 minute timer in the height of the xpac rush and long queues getting in.
The Op isn't worried about server load they simply don't want people to afk in front of the login NPC. I don't see that problem going away even if the timer was shortened which it won't be in my view. If anything making the timer shorter would only make for more people being kicked and sitting in front of the NPC.
