sleeve of wizard
I’m not sure what you are getting at? If you are in the terminal area you should be on QNH, not standard. If, as I think you are alluding to, you should correct the “Minimum Route Altitude” for high wind speeds which can cause the barometric altimeters to over read because of a possible non-standard atmospheric pressure, i.e. on the lee side of the mountains, then I agree with you. Most airlines should have correction tables for this in their ops manual.
If though you are suggesting while being radar vectored in a TMA, ie MVA that you need to make a correction simply because the QNH is different to standard then I don’t agree. If you are descending to an MRA after say a depress then you would be descending on an area QNH, not standard. Wind correction would be required if in my companies case the winds are greater than 30 kts at MRA.