Looks and paint colour (so long as it is not pink) are of no interest to me. Like probably all farmers there have been many times when most of a field is ready to plough, cultivate, sow, etc. but the odd wet patch can be tricky and the tractor needs to be able to get through that. I had that experience on 3 occasions last week, and I really appreciated the 4wd on my NH. I did not need diff lock at any stage.
If I did have a choice of a retro being produced new it would be "The Little Grey Fergie" with 4wd. I have not had an FEL since 1979 and never missed it. All the extra dead weights they add to tractors these days, and water filled tyres, so that heavy loads can be carried back and front just seem to be design faults. Harry never needed them and it takes extra fuel to haul all the extra weight when it is not needed. It will not happen any more than somebody will build a new pyramid like the old Egyptian ones.