GMDS, I really hope that was tongue in cheek, cos if not you will be severely dissapointed to learn the second runway may reduce the number of go rounds on night shifts in Dubai, thus reducing the number of panic calls to hold all traffic from both sides that we recieve in the UAE ACC, but it won't make much other difference.
As far as the A330's are concerned, MAXab sorry it is not crap to say that it is common for A330's to want lower than A100 at 70 NM's, in fact it seems to be the norm especially if you ask for high speed. What I have noticed is that when you tell them to go 310IAS or greater to stay number one, they dive for the deck and therefore completely defeat the purpose of high speed. The only time I ever try and keep an A330 in front of a tight congo line is if I have time to tee up that they are to fly 310IAS or greater and that I want them to stay high so as to cross the gate meeting the STAR requirement and no lower ie. A130 at ORLIK, GONLO etc. This means since all other aircraft types have to meet that requirement as well they are all on a similair page as far as descent profile is concerned. Now not being a pilot I don't know what the onward ramifications of this are if they are straight in RWY12 and they are A130 at 40 odd miles but in these cases the guys agreed, did it, the sequence worked, and there wasn't any go rounds. Other option DD is to do as you said and make it a policy that 777's always go ahead of 330's when it is at all close. Its not being mean but instead just looking at the greater good, as if the 777 stays high in the good winds and fast as they do, then the rest of the sequence suffers less.
To answer the question about direct tracking that is barely any change. If I have no inbounds and I can say cleared direct TONVO/TARDI/BALUS I will whether that is a big saving or not. Firstly if we don't we often get in this part of the world another transmission asking us "can we go direct ..." even in cases where to us it looks like a straight line either way (Egyptair, Syrian and Air Arabia are the worst for this), secondly by saying direct ... it means confirming the correct readback of one less point, and finally it may only save a bee's dick of track miles but enough bees dicks and you save a substantial amount of fuel. To be perfectly honest when you call us on East as a departure you are the easy flights, that is we know we can only give you FL250 as that is the standard level we assign before giving you to Muscat, and if I have you far enough Nth of BUBIN inbound and no FUJ/RAK arrivals, I can fire off a direct instruction with barely looking at the radar. This means I can keep working on how I can get those 4 DARAX departures vertically separated in the next 3 minutes before I have to transfer them to Tehhhhhhh
ran. So basically you have to push some buttons and it feels like a waste of time. Ok.