Hi Daniel, I will be very interested to see what your company produces. Good luck with this project.
Hopefully the many different suggestions you're getting here are not too confusing. Each of us has different ideas about the perfect light, but I think between what we say here, and seeing what other companies have had success with, you'll be able to come up with a useful light.
My first thought is that your specialty seems to be the LED's themselves, not the products that use LED's. Have you tried partnering with existing flashlight manufacturers to have them produce lights with your LED in it?
For example, Lumintop and Manker seem like companies who are willing to partner with others in the lighting world to make special edition lights. Singfire has also worked with members of Budgetlightforum.com to create a very simple, 1 mode flashlight that is very affordable, using the Nichia 219B series LED - referred to as a BLF-348 light. I think some members might similarly be interested in a "Yuji-348."
I also once wrote to Fenix suggesting they make a version of their low power E01 light with your BC-series 5mm LED in it, because the E01 is a popular low power emergency light, but they apparently did not think my idea was very interesting. Perhaps a proposal from your company explaining the excellent lighting quality of your product would interest them?
With that said, if you prefer to create a light independent of other companies, from what I know of your product line, I think a light powered by a single AAA battery is a very sensible starting point, since your 3030 series is a symmetrical product with a power rating similar to other 1xAAA lights.
I currently have a 1 x AAA light using a 5mm LED that I installed one of your BC series LED's in. Because it is probably only around 8 lumens and that is spread out over a very wide beam, I use it only in very low light situations but it has a very pleasant, comforting light quality none of my other lights matches. It produces a very wide beam of light, but if I had a flashlight that produced in the 50-100 lumen range, I could use it in more situations. A light with a reflector or refractive optic that focused the beam into a slightly tighter angle would also help make it more versatile to me.
Two or three modes would be great and probably help make the light more popular, but if you don't want to commit to that in your first product, I understand.
As you have probably seen, the most popular format is an aluminum body with control either by twisting the head, or using a mechanical tail switch.
Thanks for taking our input!