I doubt I would notice, because I'd probably think it was my taste changing and I'd either like it more or less than before.
And another factor, is a lot of people put it in the cellar and don't try it for quite some time.
I saw a mystery blend episode on smoking pipes, and nobody could guess it, and it turned out to be orlic golden sliced. If supposed experts have trouble guessing, I suppose we're not as infallible as we think.
I do notice that if I smoke mostly latakia blends or peated scotch, my scenes dull and a lot of the smoke flavor gets very muted.
I think it's important to have enough variety that my tastes stay fresh.