Option to request a CDA from ATC. I only ask because I assume it would not be overly difficult to implement, but I could be very wrong of course.
I also wonder if it would be rather trivial to have the ATC to run altitude clearance routine prior to aircraft reaching the previously cleared level? I’m assuming it already checks to see if the aircraft is within ~200ft of the cleared level, then checks for conflicting traffic(maybe?) then clears to next level. Can this altitude range be increased to 2000ft? Or better yet, a suitable factor of the aircraft’s current vertical speed?