They came to the 3.0 drawing board with some kind of Chemist and it evolved into AST.

They came to the 6.0 drawing boars with some kind of Chemist and it evolved into Sage.

But you know what they say...
The third time's the charm ; )
Considering they're openly revisiting the idea we know they're interested in making it happen. I'm hopeful they'll keep at it until they get it.