For a long time, the GL was sort of ignored at Honda because they didn't know what it'd become. When the GL1000 was introduced in 1975-76, it was considered a hi-performance bike but one with a very small market and it wasn't until much later that the touring bike idea began to take shape.
At the time of the 1981 Dealer Convention, I was in Japan working on the manual for the CX500T (Turbo) and also the 2nd generation Civic.