hi, at first I had your same need, since I mainly deal with photo insertions, I had seen in a demonstration the simplicity with which they were made with buildingsus and indeed I can confirm your impressions.
the program is very intuitive compared to other software that I tried especially in my case to make photo insertions with revit I had to use several programs and took away a lot of time, so I decided for constructus and except some defects I am excited about it, since they added the real time rendering module I also dedicate myself to the realization of presentations (mounted with external programs) but with more than satisfactory results considering that the whole project I realize it completely in buildingsus.
strengths: of course the photo insertion, ease of use, graphic rendering, texture library and online objects, integration with sketchups, frequent updates and fast assistance.
weak points: it does not have so many types of objects (I pay with sketchup!!), difficulty managing huge projects (but I will pass to the 64-bit version, hoping that better!!) and requires a graphics card quite powerful.
Ultimately I can consider myself satisfied! ! !