If the current time limit is under 25 seconds I don't feel like it should be shortened but I certanly wont oppose it.
choose the lenght of kick/bans?
this
with a vgui slider in menu
That does not sound like a good idea. Your setting the system up to fail if you don't put in restraints. In the time that that person is banned you can submit a report with
SOLID PROOF to get the [hacker] permanently banned.
I can't remember the ban time though, if it's just 2 hours then I wouldn't mind giving the VIP a selection of "Everything Else - 2 HOURS" and "Definente Hacker - 3 HOURS". (I think I spelled [Deff En En T] wrong)