Sorry, I'm too late for the poll but I do have a few comments if you're still hcecking this thread.
1) Your original design is incredible as is and is the gun that you should initially offer in my opinion.
2) For the die hard old school guys (I can say that since I'm 54) a steel frame model might be nice as a later option but not as the initial offering. Ditto the shorty and Micro guns.
You envisioned this as a carry gun with a performance edge and that is something well worth delivering. To go steel frame initially would repeat the mistake that Kahr made in bringing their guns out in all steel design initially. I owned one an early all steel Kahr K9, it shot great and carried like a brick. I eventually traded it in on a polymer P9 and have never regretted that decision.
I am a casual shooter but have done my share of LFI courses, CCW training and IDPA shoots.
I have owned more than a few compact handguns Glock 19, Glock 23, Kahr K9, Kahr P9, and Kel-Tec P32.
Also a fair number of service size pistols Colt Commander, Colt 1911 Series 70, Glock 24, Beretta 92, Beretta 96D, Beretta PX4, HK P7M13, Steyr GB, FNH Five-seveN, etc.
After all that my CCW pick is a stock Kahr P9 with Heinie sights. It's light enough to carry and keep around when I need it and hits hard enough to be useful should I ever really need it, hopefully I never will.
I'm considering upgrading to a Kahr TP40. The same grip size but moving up to a 4" barrel from the P9's 3 1/2" barrel to soak up the extra .40 S & W bounce and get a little better sight radius. I think many people that do CCW recognize that it's the grip you have trouble hiding when using an IWB holster not an extra 1/2 " of barrel.
Having seen your design I think I'll hold onto the P9 for a while and see what comes of your project.
If I were to be bold enough to suggest a direction it would be to do your intitial design 4" barrel, alloy frame and frame rail for a light or laser included. Then redo the same gun in .40 S&W.
After that go where ever the market takes you.
Best of luck, what you're working on looks great to me.