Add Intelligent Session Timeout

My users work a support que, they need their dashboard up for like 8 hours or as long as they are working the dashboard. have it reset every so often is not good, if they are connected they shouldn't time out. if they disconnect from the session then the session cleaner should go through and kill sessions but if the users need the app up, they do not want to reset the screen and choose all their filters every 2 hours. i guess i could increase the SessionTimeout to 480 but i am not sure that is good idea.