My "Quote" function doesn't seem to exist anymore, so I can't quote from F K S D's last post, but his points are very relevent.
Why are we all busting a gut trying to get things moving faster, when technically we aren't supposed to coordinate individual less than the stated in trail sep or dct routings to expedite traffic?
All it needs is a go around or a couple of intra UAE arrs, to upset the applecart and lead to the conga dance towards SHJ and then slot into the down wind pattern for "straight in" traffic when we've already reduced the prescribed 15/20 mile in trail sep to expedite tfc / reduce UAE Holds etc. If we didn't try to help out it wouldn't happen
The Maxmo deps ... Hands up ... our GMP/GMC controllers HAVE to take more responsibility for regulating start ups on that route, and not rely on a reduction from the 5 mins "standard". Unfortunately it actually makes us busier slowing down traffic and having to explain that the start up times (which aren't really Dep Slot times)are to acheive 5 mins in trail of the previous dep on the same route(regardless of requested cruise level/speed), taking into account some taxiing times to the Holding point can vary from 2 mins to nearly 15 mins and push back times / ready for taxi can vary as much

. Depending on Rwy in use/taxiway availability we do end up with only Maxmo deps at the Holding Points
At peak times(especially morning rush westbound) there can be an expected delay of up to an hour, with 5 mins in trail thru Ranbi and Maxmo.
The phenomenal growth rate of air traffic over the last 10 years or so, in the Middle East area has swamped an already behind the curve ATC set up, staffing level/workload, airspace structure/procedures.
There can't be many places though that have 1 a/c thru a dep gate every 5 mins regardless of cruise level, or 20 miles in trail inbound to a 2 Rwy operation (admittedtedly dependent rather than independent ops).
In closure, we work or arses off and the system still sucks