I like the idea of a thread just on the conversation re: PAR, PAR watts, ppf, and pffd. That thread could compare different light modes as a baseline. Then we could use those baselines to discuss the different ways you could build a light.
I think the vast majority of us are growing in 2x2, 2x4, 3x3 or 4x4 spaces. So I think from a “Lighting 101” perspective it would be cool to have a “minimum required ppf/pffd” kind of spreadsheet for those sizes, then we can plug in different options to get to our ppf/pffd requirements for the space.
Then you could have a more specific “build” thread. It would almost be cool to go over some of the more common options/configurations for each typical size of growing area in it’s own thread…
My thinking is that a lot of people come to this forum like I did - with a simple question (mine was wondering if I was in week 3 or 4 of flower because I messed up my journaling) but then find out they might not have enough light. We see it a lot. So if we had a baseline that said, “hey, this is what you need to provide your plants in terms of light for X space,” we could then tackle how to get said amount of light for that person.