Mad Scientist
I must take more care with the words!
No way was I proposing a technique for rapid rotation through about 15 degrees to the lift off alpha - just that it would be of little consequence if you did just that other than for a tendency to overshoot too early into the airborne segment. It would certainly startle those aboard but would get the wings doing their thing promptly.
Much better to aim for a constant rate of rotation through the transistion from ground to air borne knowing that when airborne you then start to pull some extra loading (1g+) to establish your initial climb angle whilst expertly flaring off the rotation to reach the initial climb attitude coincident with the initial climb IAS. Now that takes a bit of type experience and some 'stick and rudder' finesse to do it all smoothly, all of which tends to sort out the good pilots from the not so good!
Then there will be the hot day and a weighty heavy which will be reluctant to go flying. This is where experience can hone the instincts of the pilots in a determination of the optimum technique for rotation to lift off when the margins are small. For most types a slow rotation to lift off will often be consistent with progressively replacing rolling wheel drag with increasing wing drag throughout the rotation to achieve maximum acceleration. There will be precious little rotation to be concerned with after the lift off. Runway length will be a major factor and the lessons learned from rotations made too early are legendary.