Another ratio worth experimenting with might be to reduce the usage of royal blue since the warm white blue spike may be enough for most varieties. That would simplify the design a bit but on the other hand since the royal blue has such an amazing efficiency (55%). Also, I suspect that the improvement in resin quality may be partially due to the increase in deep blue. As far as reducing the 630nm and using more WW, I don't see why not except that the XPE reds are very efficient (42%). Either way would make for an awesome growing lamp.