So, the HK facebook crew posted up this survey:
surveymonkey.com/r/DVRYZPK (I hope this link works)
It's for pistol features and preferences. I think the P-F crowd probably has better input than the facetwit douchery.
And yes, if you're wondering, if they followed my answers they'd end up with the P30-based version of a Langdon PX4 and a G19-sized VP9 with better texture and OEM Gadget.