Halifax
I think the plan would be for the connections to be on this side rather than via YHZ to somewhere else, eg.
UK-DUB-YHZ
EI has got Scotland well covered which could connect with a YHZ flight from DUB, also for pax in NI at is a short drive down to DUB. Zoom flew from BFS to YHZ a few years back.
Even if the market from DUB is small, you can tap into all the UK markets for additional traffic.
Direct options from the UK to YHZ are very limited at the moment.