I might do that...but I fear I am too late....I went to a big major lighting company, and he showed me a led panel light pcb.....it was 8 parallel strings of 8 leds-in-series. No current limitation in each string, just one current source feeding all.....and each led was a good 2 inches away from the nearest neighbour...so thermal coupling was practically non-existent......this was a huge major company.....and he showed me that pcb........it was a large pcb, so large it was bendy, and i could not see thermal vias, unless there were some under the leds.
-these guys get a few prototypes appearing to work and think its all plain sailing thereafter..............but why , when led foundrys could make a fortune from parallel led banks being sold, each containing multiple leds like that, then why doesn't any single led foundry anywhere in the world recommend that kind of parallel led operation?