I would love to actually clear inside houses etc as just being outside is getting boring. Not sure how easy it is to do.

sounds like fun lol

I'm sure you're aware already, but one of the call out mods added in Pacific Bank Heist, which you can go in and take out the bad guys.  I'm sure some modders could make already-made interior houses into call outs (burglary, hostage situation, etc), but I imagine it'd be a lot of work and may not actually work if they were to try and actually mod interiors into buildings that didn't previously have them.

Using the More Interiors mod and maybe a mod that uses blips to teleport the player to the interior of an Online house for a callout would be interesting; not sure how exactly it would work to script peds to spawn in them, but it's a potential idea to explore. Domestic callouts would be an interesting thing to see in the interiors.

yeah i use the More Interiors mod. It would be very cool to have an active shooter in the Life office