Tower Ranger
There is very little chance that Muscat is going to catch up with the traffic situation in the near future. The new staff will have no impact for the surrounding FIR's as there are no additional Sectors or frequencies available to reduce the workload. There is always plenty of talk about all sorts of improvements that are "on the way" but the reality is nothing is going to happen any time soon. The flow restrictions that are in place are a very crude attempt to slow down the number of aircraft entering the Muscat FIR. This places an unfair workload on the UAE towers and the Area Sectors. Although a more even distribution of delays across the whole region would be a better solution, there is no method available to achieve this. What you need to understand is that the flow restrictions are in place for the safety of the controllers at the coalface and the flying public. A recent audit stated that the Central Sector should not exceed 12 aircraft at a time due to the airspace size and complexity. The traffic still exceeds 25 regularly even with the flow restrictions.
The Middle East Region is in desperate need of adopting a similar model to Eurocontrols 'Single European Sky'. Unfortunately, that is not going to happen in either your or my lifetime.