"You know, the good old days weren't always good, and tomorrow ain't as bad as it seems..."
Thus sang the great American poet, William Martin "Billy" Joel.
Don't pine for those (Gib, Mr. Green Ink, Tom, et al) who no longer hang around these parts. Instead, cultivate and recruit subsequent generations to ensure the viable growth and evolution of GCA.
Tell your course superintendents about GCA. Tell your architects on retainer about GCA. Tell kids about GCA. Encourage them to read threads and, if so moved, send Ran an email about joining the tree house.