* You mentioned focusing the spectrum on humans, but I have always wanted to have light that works well for both humans and plants (e.g. houseplants) as they are also beneficial for human spaces. Why not do both?
* Exposure to near IR has significant health benefits and seems like it should be included in an ideal lighting fixture that attempts to replicate the sun: https://pmc.ncbi.nlm.nih.gov/articles/PMC9855677/
What do you mean when you say IR can be produced in other ways more efficiently?
* How does your product compare with the Yuji Skyline?