Hey Randy, another advantage of 3DE is that the tutorials are really good, in particular the ones on the VFX tutors youtube page. You can download footage, lens grids, objs for object tracking, scene orientation, etc and he’s very clear and concise.
You can extract textures from 3DE but I’m not sure if you can unwrap / re-wrap UVs like I think you can in PF track. That’s really something that Flame should be able to do on its own. I’d rather them add this then actually rebuilding the camera tracker.