@netstruggler Thanks for that link. It seems that the officer doing the review can see what I can see!
architecturally the station lacks cohesion, having undergone several phases of alteration (originally built 1856, partly re-built 1893 and considerably altered in 1947), which do not complement each other particularly well;
whilst the station retains elements of several phases of railway history, it is not a good example or representation of any one particular phase.
Anyway, I think I might have perhaps argued my case here as well as I might.
I’m still interested in where the obvious (to me) “history trumps utility” of most of the tube network comes from.