I’ve been a fan of the Delta & WestJet partnership, and particularly liked it when WestJet still had a relevant (at least to me) network in eastern Canada. Getting from New York to Ottawa on Delta/WestJet is essentially impossible now.
I would like to see the WestJet partnership persist, but would also be grateful for more options to eastern Canada. If the WestJet relationship does end, I hope Delta increases its Calgary and Vancouver flying and resumes flights to Edmonton.