Allan,
WOW. How do you balance so many chips?
'Play with Aunt Betty's shiny kit'?....
Please tell me you have a more informed idea of what it is to operate on the FL over a recent past that has seen almost continual ops!?
Lacking ability to fly a desk?? It's not for everyone, granted, but I have yet to meet a competent operator who can't handle the 'pressure' of a staff tour. Those that opt for staff tours do so after a conscious decision to pursue that career path - the days of pressing pilots into ground tours are pretty well gone. When did anyone last see a JO pilot/nav in a ground tour?
As for chairs - sure, they should be fit for purpose. But why only at MOD? Do the boys and girls at STC/GP/Stns not suffer from RSI? You'll find a FL FLt Cdr probably spends as much time at a keyboard as many at MOD - not that you would have any knowledge of that.