The new fusing options were added into DCS after Razbam had to stop working on the module, so no, they won't be available.
Laser bomb codes you can set per station (NOT all at once) and they will work just fine.
SRS provides the third VOIP only 'radio' for QoL purposes. It is not guard monitoring as the actual real radios in the cockpit can do and it will not do anything in-game, it's just there for voice communication with other SRS users.