I’m excited that my rollers will (allegedly) be delivered tomorrow. I had Kreitlers a very long time ago (loaned to me at the turn of the century from a friend who broke his knee… he never asked for them back…), replacing an earlier set of Performance rollers I rode my mtb on (with slicks) in front of the tv. I’d spend 60-90min on my tri bike on the Kreitlers (not in aero). Good times 
My 2016 Kickr is not thru-axle compatible and thus not compatible with my new road bike nor my gravel bike, though I only plan to use the road bike on the rollers and looking forward to relearning how to not fall off and hurt myself.
I’m also hoping to see a better relationship between my real world FTP / power output / ability to execute TR workouts on the road bike / roller combo than I’m presently seeing with my tri bike on the kickr (considering the different positions, of course).