Michael,

From my spelunking in the Javascript API, it seems like it would be possible for motivated users to do most of these things themselves using the current API. The only obvious omission I found was that there does not appear to be an HTML <tag> that can be used to create a new 3D editing view(port). Although I did manage to hack my version of MoI to contain two side by side 2x2 viewports (for a total of 8 3D viewports). But I could not find a way to embed a new viewport into a separate window.

Is there any reason not to define a <moi:Viewport> tag (or is it already defined, but not used)?