This plugin sounds like it'd be very useful for L4D2 what with the game's inherent forced Lobby functionality.
Unfortunately as of current it errors on loading the plugin for some reason, thus it's functionality is not inherited.
Code:
L 03/14/2021 - 11:22:24: [SM] Exception reported: Failed to DHookCreateFromConf - 'DHook_SetHibernating'
L 03/14/2021 - 11:22:24: [SM] Blaming: delayhibernate.smx
L 03/14/2021 - 11:22:24: [SM] Call stack trace:
L 03/14/2021 - 11:22:24: [SM] [0] SetFailState
L 03/14/2021 - 11:22:24: [SM] [1] Line 33, delayhibernate.sp::OnPluginStart
L 03/14/2021 - 11:22:24: [SM] Unable to load plugin "delayhibernate.smx": Error detected in plugin startup (see error logs)