Sorry to sound like a pessimist .., but I personally don't think PG have got what it takes to even create a sample library
.., Just look at the audiophile version of BIAB , it's still in 16 bit when sample library creators (and even amateur home studio users) have been using the industry standard 24 bit for 20 years already, that to me alone speaks volumes.
A lot of work goes into creating libraries and you get what you pay for, and I have not found one yet that is a good all-rounder for everything , as they all fit into a mix differently depending on the the given situations .
I'd personally just be happy to SEE BIAB continue to do what it already, but to lift the game of their top tier product (audiophile BIAB) version into the 20th century .., with better efficiency, usability, and fidelity ....,
like 24 bit etc on a 64 bit platform would be nice , and maybe clean up its messy kindergarten looking GUI a bit more .
As for Kontakt , thats just a sample player (mostly) that 3rd party creators use as a great host. It's not expensive to buy and there is an excellent range of 3rd party libraries available. It's sort of a staple really..., just my 2 bobs worth