The visual art books were...blah. Mostly art you could find in the Ultimanias, but without the bloat of an Ultimania.
The BBS art book was just one of those bonus books you got for preorder if I remember correctly. It was filled with art easily found from the Ultimania.
SE prints art books for plenty of their other games. Bravely Default, for example, has multiple art books filled to the brim with concept art.
The issue is probably a weird mix of multiple things.
1) SE or Nomura not having an interest/realizing there is an interest from fans
2) Licensing issues with Disney causing difficulties with producing a book of this nature for KH
Disney has always been in the business of making art books, especially ones with detailed explanations behind concepts or about the world of the property the art book is for. SE is also in the business of making art books, filled with similar descriptions or with interviews. But both are also notoriously secretive...
Disney has an archive filled with stuff that has never seen the light of day. SE just fucks up and loses files lololol
And now imagine you have to have Disney approve stuff and Nomura has to approve stuff. They have agree on what should be revealed and what shouldn't. What Disney concepts can go in, how much profits are split...who publishes it???
It's not like the Ultimanias which are big game guides with art and interviews inside. This would be JUST an art book. So who gets the rights? Is it considered merchandise? If so, it would fall under SE due to their contract. But then, anything original is owned by Disney, so in reality they could publish it just fine...but then no FF stuff in it, which is what people would want to see as well. Also nobody wants to step on Nomura's toes. Imagine if he found out. So then it HAS to be SE, but then Disney is protective of their properties...
It cycles into madness.
A variable mess.
At least, this is what I imagine would happen.
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