As someone whose overall responses to the entire panoply of manifestations of the dance medium are, shall we say, "challenged" (and if this strikes anyone as as any kind of pejorative, let me assure them that it is intended to be against me rather than the medium itself), I still cannot quite resist questioning what each individual may mean by the use of the term "danceable"; let us not forget, for example, that Michael Finnissy's Fourth Piano Concerto (a work for solo piano without orchestra) was originally composed for dance, specifically for the choreographer Siobhan Davies, for all that it obviously retains its own independent identity as a concert work. Dance means many things to many people, so I cannot help but suspect that it would be difficult to generalise about this in any meaningful way in the sense that the thread initiator may have intended or hoped.
Best,
Alistair