Ability to change/move fixture to new dates in 1 step

Fixtures can currently be moved by selecting the tick boxes and then selecting the new date for them to move to. However if there are automatically calculated finals fixtures and you want to move an early round match to a later date (due to weather cancellation etc.) you have to move each of the following weeks fixtures one week at a time to a future date so that there is a spare week to move the desired round of fixtures. 

It would be much easier if fixtures could all be selected (like they currently are through the tick boxes) and then moved "x" number of days rather then just selecting a "date" like it is now. This would prevent the need to move each week of fixtures one at a time up or back one week to make adjustments for a change in an earlier round of fixtures.