Thanks for such a great little tool, I'm a programmer with very little modelling skills and most of my modelling is done with primitives in Unity (as coder art for starting a project) but something like this will up my game a little bit. But at the moment there are a few things missing which I will create feature requests for here that I think would make this tool super useful for someone in my position.
The feature request is to have an inspection pane like unity that shows the parts of the transform for an object. Such as showing the raw values for position, rotation and scale. This will give people really fine grain control over placement of an object when the handles in the scene view just don't cut it.
I tried the tool out this morning but the first thing I wanted to do was have a really thing box (thinner than 0.1) as a wall and then a triangular prism on one end to join this wall to another at 90 degrees. But I couldn't get the wall to the thinness I wanted and I couldn't rotate the triangular prism into the position I needed against the edge of the wall.