All gone rather quiet, no doubt because doing anything with the below-ground parts of the disused stations is extremely difficult, whilst many of the above-ground parts have already been redeveloped where easily convenient, or at least gainful use made of the surface buildings.
We've already seen some redevelopments in recent years - City Road and Hyde Park Corner spring to mind.
The deep shelters offer more of an opportunity, although of course in many cases they have historically been used for other purposes over the years.
Many disused stations retain operational purpose in the form of tunnel access/egress points and ventilation shafts. The first use *may* in some cases be able to be sacrificed (although who would want to be the one signing that off as not representing a reduction in risk / operational convenience?), however tunnel cooling is if anything an increasingly salient issue, to the point where a number of vent shafts have been brought back into use in recent years or expensively uprated, so abandoning vent shafts is unlikely to be an acceptable option. Re-routing through a redeveloped surface structure is viable, as seen at many locations over the years, but driving replacement shafts to tunnel level so that someone can put a café in an old lift-shaft is unlikely to be cost-effective!
In any case, LU/TFL's current flavour of the month is redeveloping station car parks - I'd say watch out for some pretty big and vulgar schemes over coming years if the current pressure on housing in London continues. Again, this isn't necessarily a new thing - Rickmansworth and Wembley Park both readily spring to mind as having had developments in what used to be quite large car parks, and there's certainly a few large ones in what might be considered prime locations - Stanmore, East Finchley, Woodside Park, Cockfosters, Hounslow West, Epping spring to mind. Then there's the prospect of roofing over some locations - London Road Depot has been rumoured for this. Of course there's the risk that no sooner has the land been redeveloped then an operational use emerges, train stabling being something which needs space for example.
