I'd like to suggest that Cities and Knights is listed as a different game to Catan. While obviously they're built on the same base, the game play in Cities and Knights is extensively expanded. The changes are not simple enhancements or minor extensions to game play such as many expansions offer these are quite fundamentally different games.
Even people who enjoy playing both, such as me, will want to know which one they are getting which invalidates the auto queueing features of the site.
The current delivery option means that you can never run an arena season for both at the same time. Indeed with the extended play time of C&K and given the way gurus are chosen it seems possible that C&K will never see Arena play, just like how 4p base game is locked out.
Even people who enjoy playing both, such as me, will want to know which one they are getting which invalidates the auto queueing features of the site.
The current delivery option means that you can never run an arena season for both at the same time. Indeed with the extended play time of C&K and given the way gurus are chosen it seems possible that C&K will never see Arena play, just like how 4p base game is locked out.