MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
It was my first from scratch design in OpenSCAD, which probably explains the "unique approach".
The biggest impact on render times is the fan grill. I'm in the process of getting that fixed up, along with a few other things. Hopefully, I'll have it uploaded within a week.
I'd be interested to see your bridging helpers because the embeds give me the biggest headaches.