Don’t know why this got necroed, but...me likey!
I haven't, but that's a heck of a fun idea. Frankly, I'm surprised that WotC didn't make a nod in that direction in XPH.
Descendants, Dr Who predating LotL by good decade or so (interesting, though, I never made that connection).The Pylons are the ancestors of the Tardis! They are larger on the inside than on the outside!