Mstram
In answer to your questions
Accent...English/Scottish/Australian accent..male...that would be me. Long ago it was Aberdeenish..before my voice broke! The only other foreign accents in YYZ terminal would be German and British ...both female..so I should stand out!
Come to the centre to visit so you can see the arrival area and you'll see where the 5000ft area is...and the reasons why it is preferential.
Not sure what you mean by runway combinations? If you mean the configurations. We try to stay on the East west parralels as much as possible as that allows for the greater flow into YYZ. At peak rate we operate in the triple which means we use all 3 east west runways Land/depart one, land one minimum space, depart one.
The configurations will change based on weather, work on the airfield, work on the ILSs, snow clearing, flight checks and most importantly...noise. This is probably what you are asking ie landing 24R departing 33? There normally will be some factor involved as they reduce the arrival rate so are not expeditious.
Arriving on 15L early morning is nothing to do with a quicker taxi (ask Fedex!) but because it is one of the noise preferential arrival runways in the curfew hours...the order of preference being 05,15L then 06L. So arriving on 15L early mornings is cos the wind isn't prevalent to land on one of the 05/06 runways.
There are 4 arrival positions in YYZ. 3 arrival controllers and 1 ILS monitor position. I was taught during my training that anyone should be able to handle up to 10 arrival aircraft into Toronto without too much trouble. Once that number goes up or becomes a constant, then we will open up an Arrival 2 position. One controller for the south runway, one for the North runway. Traffic from the south and west goes to the south runway, traffic from the North and North east goes to the north....although to create a balanced loading or to give aircraft more expeditious ground taxis..this can and will change (especially in a triple operation where you favour the south arrival runway as you can run minimum spacing).
Arrival 3 is opened at peak rate (68+) and has two controllers working the south runway...one to sequence into the downwind, the second to turn onto the ILS.
ILS monitor is used in poor weather....and enables us to run the parralel approaches in non visual conditions.
It does depend on the time of day and amount of airplanes...obviously...on how many arrival positions are open. In the summer it is not uncommon for A2 to be open from 2pm right through till 10. Winter.....opened and closed hourly.
Sometimes it may sound like someone is busy...but some controllers talk more than others
PM if you'd like a centre visit...most of your questions are easily answered there.