Thanks, Hans.
I took your advice, and am exploring, for the first time, the world of
frameworks. It looks like some combination of technologies may work.
I am not so much interested in the scaffolding capabilities of Gaia. I
have a shell or wrapper of a website that I am very happy with, so I
wouldn't want to lock myself into the distinct Gaia site structure. On
the other hand, I am very intrigued by Gaia's asset management and
transition management capabilities.
I also am intrigued by Robotlegs -- and, of course, AS3 Signals.
Will continue exploring the two and report back FTI.
Thanks again.