Rich, thanks for taking the time from your production and business planning schedules to check in with your "public".
First and foremost, as a businessman I respect the process you are going through. Not to put words in your mouth, but I'm sure you are looking at things like long-term viability, market-niche and penetration, and frankly what ultimately is the most fun day in and day out. Contemplating a shift in your approach is no easy task, but apparently y'all have reached the point of doing some soul-searching. Here's to ya.
From the brief period of time I have been studying your offering, it appears you offer very high quality in what you deliver. Your car offers the builder a great chance of success in either ending up with a period-correct car, or a modern interpretation (custom). If that can translate into competing with the obvious established players in the quality turnkey segment is the $30,000 question (uhm, not necessarily anything implied by that number!).
I do echo the sentiments of those who have already replied that personally it would be a loss if you no longer offered the kit product. There really don't appear to be any other producers of original-dimension, high-quality, correct body-shape kits at your current price level. At least not any that I feel comfortable with.
Good luck with your endeavor, and just know that there are many of us that will follow your story closely.