I just received this deck, the Spanish deck-book set from Amazon. I really like it! There are a lot of little interesting touches. I like the slightly bare look that a lot of the cards have.
For sure the Majors are a mashup of the RWS and BOTA, as Aeric pointed out. Also, it seems clear that the Minors were majorly influenced by the Connolly, particularly the pink-purple-yellow multihued skies and the "endless" Escher-like design of the pentacles.
I was a little disappointed that the faces aren't consistent -- some, like the Empress, are rather crudely done, while others, like the King of Swords, are very finely done.
A nice original touch on the World card is that each of the four animals in the corners sports four delicate little purple wings.
My own theory about "Edith Waite" is that the publisher wanted to capitalize on the "Universal Waite" name, and sought to avoid copyright litigation with US Games by saying, "oh, it's not that Waite, it's a different Waite." I suspect "Edith" is as much a real person as "Betty Crocker." Maybe Edith is Betty's tarot-reading friend!