Seems to me that, IF the general idea behind getting the most out of LED lighting (for growing cannabis), is to under-drive multiple emitter arrays, then the trend is going to be leaning away from using big COBs and more towards using something along the lines of these boards...simply because you can put more emitters into the same space -thus creating a more even coverage scenario...and they are poised to be in particularly great for the small-space growers -cabinets, tents, small rooms, etc. No noise, low heat, high efficiency, low maintenance, high safety...sounds like great idea! I hope to try one someday!
Good luck to everyone involved with developing these ideas! I think they look fantastic!