I’ll probably gain no friends here, but I wish Billy Bishop was expanded.
I travel through Pearson a lot for work and its misery. I used to use Billy Bishop and it was a pleasure: less wait, less walking, less cascading delays, easier checkin, etc.
Any direction you fly out of Pearson is used/populated, only one side for Billy Bishop. A high % of folks with hop in/out of cars at Pearson, few at Billy Bishop who will opt for public transport.