It's a rare thing for TV watchers to really mourn the passing of backstage personnel. Roddenberry's death was one such occasion . . . today we have another.
I've often referred to Michael Piller glowingly . . . he was one of those rare jewels who actually worked on Trek while simultaneously knowing what it was about. Like Roddenberry, he could take the 'ugly little advertising box we call television' and make it work for him, sharing and considering ideas with meaning.
He was neither a writer nor a producer nor a hyphenation of the two . . . he was a working philosopher. His absence was keenly felt after he departed Trek, and would be keenly felt in any Trek history which failed to mention him glowingly.
My sympathies to all who knew him.