I went through armorer's school the week the drop-safe issue made itself known. I'm hoping to recert this summer and get the updates for the added parts.
Any way, we played with the "sear box" but were strongly encouraged to stay out of it. The only reason I could see for someone to root around in there is trigger enhancement. I'd trust Bruce Gray to do it but Officer Bubba should keep his hands and punches out of it. Realistically, the trigger is "good enough" that only competition guys might see some benefit from mucking with it.