re: Text realtime preview - I do want to try for that eventually, it was difficult enough that I just didn't have time to work on it for V1.

It kind of needs a somewhat fancy caching system so I can avoid recalculating previous letters when you are typing.

One thing that might be easier is to have just a wireframe preview in this particular case, instead of actually building the actual resulting solids as the preview like everything else normally does.

- Michael