This is looking really good. I too like the direction you are taking with the new prototypes (colors, patterns and especially chest pockets) and I'm also a blue fan. Not sure if these have been mentioned, but some possible options:
-closures for pockets
-pit vents since the breathability isn't crazy high (but these could be full time vents without zippers initially to cut down on the cost). It's a warm weather concept so it should work
Best wishes with the apparel!