Yup, agreed. Of all the Magic settings, this would probably be the one I'm least interested in.
One of the more likely ones to happen, though, since the Setting (qua Setting, aside from gameplay considerations) was apparently well-received and has a lot of room for Magic design space (and unique D&D trope space, to boot).
James Wyatt has said I'm the past he didn't think that any Setting that received a Planeshift document will ever get a full book, since those are freely available alongside the detailed Art of Magic the Gathering books. This would exclude Zendikar, Innistrad, Kaladesh, Amonkhet, Ixalan and Dominaria from the main list. But time will tell if that holds true, as more of those get new Magic Sets.
So, that would leave Tarkir (which would be awesome) which is overdue for a return if it will ever happen, Kaldeim, Eldraine, Ikoria, and Strixhaven.