Sancho - can't argue with your sentiment that GA lives are as important as the majors, BUT - I have to disabuse the popular notion that placing RFF at GAAP or large regional ADs would make any difference to outcomes (ie lives saved).
Fact is, as tragically proved many times, when light aircraft prang at or near aerodromes, it is either outside the immediate environs so airport based RFF is no more useful than normal metro fire services; or it's 'all over red rover' within literally seconds of impact.
Unless you subcribe to the notion that we should have (and pay for) RFF at every decent sized AD, AND they should be sitting next to the threshold with the engines running 24/7, AND an EMS service +/- helicopter is on 24/7 standby at the AD, then provision of RFF is a moot issue.
In my opinion 30 min to respond from the nearest metro fire service centre to the AD is a pretty sad indictment on that service; however, running dry while holding for 30 min??? What happened to the 45min res + variable? Or was it longer that 30 min? Some more facts needed here I think.
Cheers.