I’m just most curious about the goals of the project. I understand that it is a beta and that features may come and go. I could see great value in a product that worked as a replacement for the desktop software. But it would have to have lots of things (custom shortcuts, plugin support, import and export functions etc. etc.). I would guess that this is not the goal of the project but wondered what you thought.
If it isn’t that, I could also see great value in a “session” type format which allows multiple users to get in and mess around all together, communicate ideas etc (see Autodesk Formit).
If it isn’t that either, I could still see value in a very mobile friendly version of SketchUp that worked really well with multi-touch devices that would allow me to share and present models much more universally.
For me, at least, there is not a lot of value in a web based SketchUp “lite” in and of itself. It’s fun, but I will already have the desktop version with all of my customization etc. So maybe the market is not me?