@Keener-Trooptrack,
Perhaps a different direction and perspective to keep the security of the 30 min logout but flexibility to those of us working in TT for long periods of time but with breaks greater than 30 min at times.
Many systems have an option at login to check a box saying something like Keep Me Logged in, if you implemented something like that with a note saying do not check this box on shared computers ie Library etc. If you really feel having an auto logout period is necessary perhaps that checkbox could do so after 60 - 90 min, I would think 60 min would handle most scenarios but 90 would give even more flexibility.
The other argument is that once people are used to the new setting they will change their workflow to accommodate it however begrudgingly at first.