My dear old Dad feels the same as Gordon and Grumpy about those of his old wartime Squadrons that have vanished - 206 and 26. Retired since 1978 (after 36 years in the mob) he still goes to his main wartime Squadron reunions and still reads the RAF News. He approves of the 8/23 way of doing things - the fact that the French do it is not a positive point! He would definitely approve of anything that kept 206 and 26 in being!
Like you, he deplores the use of proper numberplates for FTSs and OCUs.
Interestingly, he's not that bothered about the peacetime units he served with, except those he served with that saw active service (eg in Malaya).
I would emphasise that I'm suggesting using Squadron numberplates for flights - which really can be operational units, putting up autonomous formations and missions and even manning rotational detachments.