Hey everybody,
I have massive issues with taxiing delays, too. I also tried out a lot of layouts, but no success…
Since i read a few comments about how
things are or how to
My first thoght when I think about the “taxi-topic” is not the realism, but the in-game “fun”, respectively the balancing: I watched how planes move and how long they need for specific steps, and my result is:
Let us take a Medium Aicraft with a turnaround time of about 4 hours. 4 hours is a very long (and unrealistic) time, which does - in my oppinion - not matter as long as it fits to the amount of time I need within the game to process a plane.
The real problem in my eyes: a typical aircraft does need abot 3h to taxi to its gate, then the turnaround goes on very efficient, so the massie delay is catched up and ready to pushback on time. And then it stucks there for another 2 hours, while I get massages, that the next plane cannot land.
In my eyes it would be okay, if the planes would need about 1/4 of the turnaround time (about 30 min) in average to get to their gate and push immediatly when ready. But very often they do not move at all, although there is enogh space and free taxiways. In many cases they won´t move, even if the only other plane is at the other end at the airport; they manage it to block each other anyway…
And as far as I can see, none of them has a priority to move, so both are waiting for each other for a long, long time…
quite a long text, but to sum up: taxi and take off times don´t have to be realistic, but balanced to the turnaround time in total. And we need a better priority system, that airplanes will not block each other meaning no one moves at all 
Greetings
(none of them moves)