This is a false dichotomy.

It is perfectly possible to keep the Victorian facade and build excellent new pools behind it. Have the best of both worlds. If you look at Steve Grindlays plans it is obvious that the frontage building just "bolts on" to a couple of large pool sheds. It will even stand up on its own while you knock down the sheds and build something new behind or at the side. the extra cost for this is only ?200,000 (on the council's own figures).