I guess I didn't detail myself enough...

If you are to adjust loft and lie with an unparalleled shoulders, legs that straighten at inpact, over the top, swoopping swing, that has a bad inside out movement then he would have to repeat this swing everytime to hit the ball square. Not exactly helping but could possibly be doing more damage. Don't adjust loft and lie to a golfers bad swing but tell him you will adjust once he gets some form down.

Now if someone has a pretty good swing then as I said before its ok to adjust for them.

Lets say someone needs their irons bent 3* upright and is 5'6" in height so he gets them cut around .75" under. Now lets say he fixes his swing and needs to have them 1.5* flat from standard. WOOOW, now hes having to play with irons that are digging the heel in the ground and thats if he can mentally get past the look at address when his arms are in the correct position. Chances are it will be harder for him to fix his swing until he fixes this problem.