Brockley Society turned a phone box into a mini library:
https://www.standard.co.uk/news/london/ ... 18293.html
Perhaps something similar could be done if this phone box is no longer operational?
I would just be worried that there might be accusations of replacing one relic of a largely outdated technology with another.
The Forest Hill Society was recently granted funding by the Forest Hill Ward Assembly to create 'Book Nooks' in local shops and community buildings, which is probably a better way to encourage reading rather than the telephone boxes.
But this particular telephone box could be of historic importance. There aren't many KX300s left* and within such close proximity to Pacific from the Crystal Palace they could form the basis of a new conservation area covering the Dacres Estate.
(*No source for this statement and the whole sentence is not meant to be taken seriously).