NATS has nothing to do with airfield taxiways and locations of buildings. When the decision makers were pondering where to build T2 they don't seem to have foreseen or taken into consideration what effects the final choice would have on ground ops or what else they needed to do on the airfield to make things work once that decision had been made. They were either clueless in this regard or didn't care, take your pick.
With the recession (allegedly) on the way out the airfield congestion is bound to get a lot worse and I haven't seen any reports/evidence that anything is being done about it.
The new runway would eliminate the real problems here.
New line up will happen when 37 p/h departures are triggered, otherwise not going to. Currently at 33 and Nats have to allow extra flights to increase capacity. Regulators decision not the daa.
Aer Lingus and Ryanair are happy for slots to be directed to more off peak times for services......
Perhaps have a read of the regulators reports!
As a result of the 2 Ryanair collisions, Taxiway A is no longer available for departures off 34 during duel runway ops, despite no other carrier having had issues. All departures for 34 now have to taxi onto 28 and line up on 34, this has reduced options for the Surface Movements and Air Movements controllers in the tower.
The layout of Dublin is a joke. 4 cul de sacs, even at the back of pier D. They need to get on and build 28R/34L and immediately close the current runway and rip up and re-design the taxiway layout around the thresholds of 28/34
Surface movements in Dublin in the mornings is one of the most stressful jobs in the country.
Not ideal but as you say a new runway would eliminate a lot of issues.