How wonderful to see Clive Russell in there! Makes me want to rewatch Neverwhere - although, to be fair, the *existence* of Neverwhere makes me want to rewatch Neverwhere!
I feel Neverwhere lost out from being ahead of its time. The big Urban Fantasy boom was just around the corner (Buffy aired, I think, a couple of year later, and then there was a huge vampire fad in the next decade).
I think Neverwhere definitely deserves a reintroduction or better yet, a remake. Some of the best urban fantasy/mythology ever created. (But who could do justice to the Marquis de Carabas now? Maybe Ncuti Gatwa? Rege'-Jean Page?)
I mean, sure, if they could find a newcomer with the right flair to be de Carabas, that would be awesome. (I think de Carabas is the only character that would generate any significant comparisons with the original show, hence my harping on casting him.)
I think this is all absolutely right. I'm just glad it exists in the form it does. I have so much nostalgia for it and am secretly glad it hasn't yet been remade.