I kind of agree that there's no point for most people that want a mod like this, but it would still be pretty great. See, I didn't find this mod because I was looking for a hardcore police simulator. I found it because I was looking for casual mods that let me create a character and just faff about in Los Santos without being one of the incredibly-boring-to-me-at-this-point main characters. The 'be a cop' aspect of this specific mod is what sold me on it, sure, but it's absolutely a secondary consideration. Honestly, I'd probably be using the RPG mod if it hadn't seemed to have died a very ignored and anemic death. GTAO holds ZERO interest to me, and I have too many disappointing hours of ARMA 3's Altis Life under my belt to hop on an 'rp' server.
I still love the idea of this mod. It's undeniably cool, even if I'll only ever use vanilla assets. But opening up some more properties or activities would be pretty awesome. I get it's not a priority, but casual players are players too, and this one has the potential to be a really cool slice-of-life style sim instead.
Guess I'll just do what Will says and see what works for now. Either way, both on and off duty sound fun, so that's fine by me!
Thanks for the responses, folks.