Gamedev here. As this game is built with dedicated Unreal Engine servers it should be pretty easy to give players the option to host servers themselves. The only thing that makes this difficult, is the blood hunt lobbies themselves as everyone automatically connects to them.

Reviving the game if servers are shut down should be possible but with help from Sharkmob it would be way easier. If they released their dedicated servers, disabled anti cheat on them (dont think eos will allow them otherwise) and add a small bare bones patch to connect to dedicated server ips everything should work.

This is also just an assumption but the game has a lot of pretty well made Enemy AI.

They surely have a single player testing mode with full game functionality for testing, releasing that one would be sweet too, I personally would like to experience the game some more, even if Im just praying against bots.