Hi All,
Many thanks for all your replies and advice. I am confident that I might have another 10 to 15 years in my workshop; just got to shift out of armchair engineer mode and make every day count.
My lad was a bit hurt that I painted him in possibly an oppressive mercenary light Money doesn't figure in his longer term view – fortunately not necessary 8^). His main imperative is to protect me from myself. I am an enthusiast of "retail therapy" and the postman's bell or Amazon knock brightens my week. Hence my need to sound out your collective expertise on the consideration of new ironmongery.
btw I've just ordered some compound imperial/metric changewheels for the Myford so my deliberations have some miles to run yet ; roll on this virus disappearing!
Best Wishes, Les