@GolfSpy_BOS This topic has kinda been stuck in my head since you posted it. Driving into work this morning I was thinking about several times I have been fit and where the fitter would have said why club X or Y was good or bad for me (being it is going straighter, ball speeds are up or whatever else) however rarely did they say why said club was fit to me due to my swing tendencies. Granted I often will tell them I often hit down on the ball a little more than I should (talking driver) so I lean on lower spin heads often with a little less loft, but I would think that is the other part. A fitter should or could say Club X works for you because it gives you tighter dispersion, greater ball speed and it is set at these settings because you do X and Y which this club has been set to help negate. If you improve that swing function then we will need to do this with the club so it will still fit your swing and help you produce those numbers.
Maybe the part that Crossfield left out (I would have to rewatch) is the educational part of a fitting. Yes a fitting can and should somewhat also be a lesson/fitting, but the educational value of one is huge. It is why TXG has taken off so much as they provide excellent educational value for their consumers (both in stores and on youtube).
I think that is it, I really am intrigued by this topic so I'm sure I'll have more to talk on it.
Maybe @Golfspy_Lukes can pin this one to his fitting section as well.