I think the shapes on the mini-map don't make sense. 

• Mass should be a circle
• Radioactive should be a triangle
• Turinium should be a square

Why do I say this?  Well when you are build a mass you look for the circles to build on.  When you see a triangle you know you need to build a radioactive.  Then you look at the mini-map and say to yourself, I need more radioactive, so the first thought is go to a triangle in the mini-map, well no radioactive there.  Then you get all confused.  Things just seem to be backwards, and I think this little change would go a long way making the game play more polished.  Now this is only my option.  Hopefully enough people will respond to this post so that it will get some attention by the devs.