This is possibly a silly question; I'm not sure. I've read that shaft length plays much less of a role in distance than loft, because club head speed doesn't change that much with shaft length.
It's also true that many amateur golfers have a "favorite" club that they hit especially well. This is probably because the different shaft lengths call for adjustments in posture, and one particular length is ideal for a posture that a particular golfer is most comfortable with. So the golfer feels more comfortable swinging that club.
So, the obvious question is: Why not make a set of
clubs that have shafts that are all the same length, the "comfortable" length? With these
clubs, setup and posture would always be exactly the same, so the swing would be even more grooved. There might be some loss in distance with the less lofted
clubs (maybe) and some gain in distance with the more lofted
clubs, if a mid-length shaft were selected. But there could be a huge gain in consistency, I would think, and that would be worth a lot.
Has anyone every heard of anyone doing this? What is the argument against it?