and loads of aircraft diverting due to fuel shortages!!!!
Diverting might not always be an option with the new 'commit' policy a major user of DXB now has in place. Many won't have anywhere else to go.
And I'd be willing to bet that 90% of the pilots in that company aren't aware that Sharjah, their 'second runway' option, won't accept an aircraft diverting from Dubai unless it has declared an emergency. (This is pure rumour. I haven't seen this in writing, just heard it on the grapevine.)
If DGCA is the problem, isn't it up to the major user of Dubai to demand some of these changes so they won't waste all the fuel coming into DXB that they save elsewhere? Last time I came into Dubai, we were down to FL250 30 (thirty) miles before ORSAR and then dragged all the way around to land on 30 (still required to be below 13000' at whatever it's called). And we were required to be back to 160k as we turned base - a very long base. 1.9 tonnes burnt from top of descent to touchdown.