'Pawn promotion can only happen on back hexagons previously occupied by opposing forces.'
So, if they get to the end of file a or l (in the 2 player game) they have to wait until there's an enemy to capture to get them somewhere where they can be promoted? This is a major departure from square-cell and even other hex variants. For myself I consider McCooey's game a greater improvement on Glinsky's, and suspect that others will agree.