It has been getting busier and busier of late and a queue at all the holding points is all to common.
Another problem we face is that in the delivery position (121.97) we used to have a screen that showed us how many aircraft were started up on each route and if there was too many norths or too many souths we could restrict starts on that route. It gave a good guide to how many were in the system. Unfortunately this was removed a while ago and there are no plans for any replacement. This basically reduces our overall awareness of the traffic situation on the airfield.
Sorry you had to wait and then got short on fuel, however I feel these delays are the sign of things to come. Particularly in the new control tower.