To me the pondered changes are so minor in terms of what they add that they are not worth the bother, or even a yawn. Put a triple on and be done with it.
you can't find a modern triple, much less modern brifters that will handle a triple. IIRC triples disappeared with advent of 10/11 speed. Last 'modernish" triple i have used was 9 speed ultegra
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Life is too short not to ride the best bike you have, as much as you can
(looking for Torpado Super light frame/fork or for Raleigh International frame fork 58cm)