First of all I would like to thank the developers of the 0.18 version of FreeCAD, I truly feel that this is a version which is not only usable for real world engineering projects but also a competitor for some of the high dollar commercial CAD packages.
That being said, I've started to integrate FC a lot more into my daily work. First starting off with some of the proof of concepts projects like the one below:
This is a telemetry/boilerplate cubesat which is being developed in order to calibrate the performance of a sounding rocket, this was fully assembled with the help of the A2+ workbench. I did find the A2+ workbench to be very helpful, especially when modeling the kinematic behaviours of certain components.