Why not KataGo?
I’m just playing devil’s advocate here. I doubt any such feature would actually make that practical, and, of course, it should be prohibited by the rules against AI assistance.
However, I think there is some gray area between the current implementation of the conditional moves and more advanced versions, as suggested earlier in this thread, that I think is worth discussing, in order to figure out where it makes sense to draw the line.
@Vsotvep suggested the use of premade files that could contain fuseki/joseki books. How far should one go with that?
For example, AlphaGo Teach’s entire fuseki book is available online and can be download as an SGF file, see:
Would it be appropriate for one to make and use a premade conditional moves fuseki book based on that?