If BMW wants to make a K1600R I'd be all over that. I think I'm too young (in my mind) for the GT, especially the GTL. I'd rather go naked. If I find a nice K12R or K12R Sport that I can grab I'll drop my GT in a hearbeat. Might move to Europe or some place that still has the K13R's available. Canada does but I hate winter.
Enjoy your K16GT, I've heard a ton of great stuff about them.