Fair point GlueBall, it was an observation about minimising the possible effects of high altitude acclimatisation more than an operational one - I.e. a ventured response to VS1711's original question concerning crew performance.
Your times assume a CPD without the benefits of level off and vectoring. The possible negative physiological impact would be the result of rapid increase in cabin altitude if on a CPD. Minimum ROD/minimum level off times could help to offset any of these, including hypoxia, by extending acclimatisation times without the use of oxygen.
The CAAC have been reviewing their requirements for the operations in to such fields - especially as they are looking to build/extend an increasing number of high altitude and very high altude airports such as YanJi, Bangda, and Linzhi and this aspect is being considered along with a number of other dynamics.
Glueball if you have any specific experiences in terms of very high altituide ops with operators you may have flown with then it would be good to hear them...
