Is it possible to analyze a position with different weights at 40b and choose the point with the highest win rate to play?

[awsjgyjgy]

[lightvector]

Sure, it's possible. Download a program like katrain or ogatak or q5go or whatever, run multiple instances of those programs with multiple instances of KataGo using different neural net weights files, and analyze the position and then pick whatever move you like.

If you want to do it programatically, then write your own scripts to communicate using GTP or kata's analysis engine and do the same thing.