Rather than continue in stating that AOSX is progressing nicely, I thought I'd illustrate the framework using a picture (attached).

The picture depicts the initial framework, since then David and myself have been working through aspects. Although the overall structure has remained very close, the finer detail has changed.

You can see two client applications connected in to an AOSX service application. The AOSX service supports plugins for vendor and transports. It's these interfaces that have been in flux.

Also attached is a screenshot of David's EQMount app running against AOSX..