Looks good Speedy. In the photo it looks like the masonry has rounded corners, this could be a kind of cool effect to implement in a modernisteic design, cube forms but with slightly rounded or fillet corners. It is also cool showing and emphsising the infrastructure like the roof drains in the design.
It could also be cool to have the walls become a random grid pattern that disects the space and penetrates the exterior envelope to create exterior spaces? Just some thoughts!
The attached sketch is not 'designed', just intended to demonstrate the grid system becoming planes that extend out of the shell creating exterior space and making the project appear larger. The final design would probably be more random with a low strong horizontal emphasis. I repeat this was just quickly done on the digitizer tablet in a couple quick moments, it is not meant as the design concept, it is to rigid and blocky. Just throwing out quick ideas and not meant to try to change the direction you are going, just part of the dialogue process.