You really have excelled yourself here, Tim. A truly outstanding piece of work, quite amazing.
I wouldn't worry about the stabiliser leg blocking the access to the storage compartment as compromises like this have to be made in real life.
The idea of compressed air outlets for the rescue equipment I like. Here, we've been thinking along similar lines without knowing it, the difference is I haven't got beyond thinking about it.
It's very kind of you to mention my stretched 3880 as your inspiration; the difference is yours got beyond the concept and a mock-up held together, if I remember correctly, with rubber bands!
Once again, Tim, an amazing custom.