Yeh, having busy stations retained isn't necessarily the answer.
But trying to come up with a good answer to suit all can cause problems within itself.
If the system at Mt. Barker works, then leave it!
I think we have been very lucky with the dedication of some within our station, as we still get an appliance out the door under 5 minutes and followed by a second appliance maybe 1 minute after.
Regarding fire alarm response, I notice a few groups complain about having to respond to these, but the way I see it is, you have to do the more mundane thing occasionaly (I love PRIVATE fire alarms...NOT!!) and take the good with the bad.
After all, that fire alarm, could be a going fire!
Cheers, Mat