Manchester will always struggle to overcome the fact that the second runway is to close to the first and should have been built to the North of the terminal.
And the only way MAN could get a 2nd runway was to have it positioned as it is so as to minimise the use of greenfield sites and so getting grudgingly approved by Cheshire Council. 72 movements per hour should be more than ample; what needs to happen is greater use of off-peak times. Which is where easyJet and Ryanair could be useful in starting to operate a greater number of from non-UK bases.