Unfortunately, regulators will only change/create rules as a reaction to an accident/serious incidents. Operators might have a different approach. My previous operator had in its SOP a 700'/mn max rate on clmb/dsct in RVSM in the last 1000', achieved by use of V/S (logic being that if everybody does it, the max closure rate would be 1400'/mn which is below the threshhold of RA); my present operator does not want to see you use the V/S mode (scared of stalling the plane!) unless it is to maintained a rate requested by ATC. Probably the next generations of aircrat will have alt capture mode that reduces the rate in the last 1000', until then...