I hate when I do missions for certain blueprints and don't get them.  I have been trying for a week now to unlock the blueprint for Versatile but the weapon rarely shows up after I finish the missions.  It's mainly the Legacy and sometime the Magnet-Z1.  The first time it showed I lost the match and only had like a 44% chance so I didn't get it then the second time I had an 86% chance after beating mind over matter and I still didn't get it like WTF!?  Either MSE needs let you choose which weapon blueprint you want to get before the match starts or have it where if you get a blueprint you can use it for all characters weapons that the blueprint is used for (Common/Rare) instead of just the character you chose for the mission.