Giving minifigs fingers and realistic heads.
they've stayed with them for 45ish years, I doubt they will change them
I wish they would do is add little ball-&-socket adapters that one side could attact to the arm and the other side attact to the torso's arm hole and they would be like skeleton joints
And the reason I want an adapter instead of built-in is so I can use old arms and torsos for it instead of having to use only new ones