Can only remember two suggestions over the years. In the early 90's, I suggested that Mosaic do a BYG box. I received a note from Michael Cuscuna saying that it was a good suggestion, but there would be too many licensing problems and problems with the musicians involved to do it. That made sense, given what I knew about BYG's history and what I had read about musicians' feelings about the way they were treated.
The second suggestion - a year or two ago - was a reissue of George Russell in Kansas City. Got a response that it was a good suggestion - still hoping that it happens.