Quick restart isn't actually an ASBI feature. Anyone (who is server leader, of course) can do it. Just press F8 as soon as you see the red "Mission Failed" message, and look for a restart button at the bottom.
You can also use this F8-restart anytime during a mission, when you feel like the players who are alive right now are unable to finish the mission.
Sadly, death cam is tougher to disable.
asw_marine_death_cam 0 does the trick, however, it requires cheats to be enabled. Moreover, as soon as you disable cheats, it goes back on.
How to do it: In main menu open the console, and write there
sv_cheats 1 Enter
asw_marine_death_cam 0 Enter and then type
map <the map you want to play> (e.g.
map as_sci1_bridge) Enter
If you connect to an ASBI server, leave it and then make your own server, it will have some similarities to the ASBI servers, like no death cam and changed player collision. Restarting the game removes these effects.
You can disable death camera by installing SourceMod and using such command:
sm_cvar asw_marine_death_cam 0
It works both for dedicated server and normal in-game server.