Thanks for the encouragement 🙂
I need to look more into the agencies framework that LSPDFR 0.4 provides to see how Coastal Callouts might integrate into that in the future. In terms of mod content though, it's designed to be very open-ended, so you could play as a variety of agencies and customize things to your liking. Coastal has its own customization XML files similar to the LSPDFR 0.4 agency/station customization files, which lets you customize in which areas what types of boats and helicopters will respond. Agencies that are all represented in some way or another include:
US Coast Guard
Los Santos County Sheriff (I don't have anything set up separately for BCSO, but you could add customization for Blaine County if you wanted)
Marine patrol boats
Rescue helicopter
Los Santos Port Police
Los Santos Fire Department (fire boat, and fire rescue helicopter)
Los Santos Lifeguards
The installation process is one of the main things still holding up release. It's a very complicated mod to install, because of how much content it adds to the game in so many different types and locations of files. Right now it's all manual install, and a lot of beta testers have complained about the install process being tedious. Most people get something wrong on the first try. So I am building a custom installer that will install everything. It will not require OpenIV to install. I will include manual installation instructions for those who prefer it, but would strongly recommend doing the automatic install for most people.
The mod will include the full Coastal Callouts DLC with over 20 different vehicles including boats, planes, helicopters; several custom peds; a multitude of map and ambient scenario edits; custom props; and more. I will probably provide a "basic" install option with only the required custom props and without any vehicles/peds/map edits for people who might not want all the DLC content.