SS13 infinite (gamemode idea).

[Urlance Woolsbane]

The biggest problem that comes to my mind is something that happened in either late 2016 or early-mid 2017, where someone set off enough canbombs on Cog 2 to completely fucking annihilate the map, almost no one survived, and absolutely none of the station survived excluding some extremely bomb proof things. This led to no being able to call the shuttle for almost 20 minutes until someone finally finished gathering the required stuff to call it.

If I may play devil's advocate, this could easily be fixed by doing what some other codebases do, and auto-calling the shuttle upon destruction of the last communication console. That said, players would obviously abuse this to get the shuttle called, for the simple reason that few want a round that lasts longer than an hour.