The longer the shaft is in a driver or any length club does not produce more swing speed.

It can provide you with a longer swing arch in which a shorter and longer shafted club being swung at the same swing speed, in theory the longer club would provide you with more distance.

The longer shafted club is harder to control. Center contact and greater distances may come from a shorter shafted club.

Lie angle, Lie angle:

Lie Angle is much better in controlling club face angle at impact by the shifting of the weight either towards the toe or heel and the way you factor in off-set in the sole of the club.

Lie Angle provides a better workable club then just closing the club face of a club which in closing is only a Band-Aid Fix.

The more upright shaft can take a less flexible person and allow him/her to gain flexibility by having the hands higher at address which forces elbow flexion in much the same way as holding the club off the ground to address the ball and then to proceed into the back swing.