Fair enough, I cant say as I have zero experience in optics. Just relaying my experience from the exact same internal decision-making process at a couple other companies that design and manufacture for a similarly niche market. My entire job was literally to do the market and sales analysis and use that info to drive a data-driven assortment planning process. Most Design, Development & Marketing companies have a "product line manager" or "category manager" position whose responsibility is exactly that, although I guess its in question how exactly they execute on it.