Considering how much connection there already exists between and within Europe and Africa, there's a huge potential for Moncton to snag two crucial connections to Africa and Europe in Casablanca and Paris.
A dozen or so of these African cities on the above map could be classified as French speaking, with a combined population of well over 50 million.
As MonctonRad mentioned, there's many French speakers moving to Moncton from Sub Saharan Africa, and for the large majority of them, a flight to Moncton via Casablanca would be a lot better than the current route via Paris & Montreal. We'd be talking close to 3000km saved for for journeys between Moncton and Casablanca. It's not going to be a daily flight or anything, but maybe it could be a two or three times a week flight. Flights from both Paris and Casablanca could be a significant step forward in helping Francophone immigrants to Canada pick New Brunswick instead of Montreal, and it would also open up a whole new world in terms of tourism for the Maritimes. Mexican/Caribbean resort vacations are like the most stereotypically Canadian winter vacation idea lol.

No offence to the many who enjoy their Mexican and Caribbean resort vacation, I'm sure it's relaxing, but just doesn't sound exciting to me. While I'm sure exploring outside the resort sounds fun, Mexico's violent crime stats speak for themselves... It's far safer to rent an Air BnB in Morocco than an Air BnB in Mexico outside the resort areas. Morroco still has the typical all inclusive resorts that Canadians crave so much, but it's got a lot of other options that Canadians would consider with Mexico, but don't because of safety issues. The Moroccan economy is heavily reliant on tourism, and I wouldn't be surprised if their government would help facilitate or even partially subsidize a flight between Morocco and Atlantic Canada.
I think Moncton should have both a Paris and a Casablanca flight, while Saint John and Fredericton should get something to the UK and/or Ireland. Though, it would be a lot easier for airlines to invest in such flights if Saint John and Fredericton shared a single airport, but having a UK flight from YFC, and an Ireland flight from YSJ would at least get people from both cities to drive the distance for a flight. Still, a combined Saint John/Fredericton airport is something the younger generation should push for, even if our boomer parents, and great grandparents don't think it's currently worth the expense. In the long run, it would absolutely be worth it for the Saint John and Fredericton CMA's to share a combined airport in the middle,
as the CEO from West Jet said, having so many airports in NB isn't helping us attract flights.
While a 1 airport model is unlikely to even happen with how much as been invested in YQM, a two airport model would still be worthwhile... YFC and YSJ are still very basic airports, and there is nowhere close to "too much" sunk into them to prevent building a bigger, better airport midway between the Fredericton and Saint John CMAs in the future.
Moncton getting a semi regular flight to Casablanca could help French immigrants pick Moncton and New Brunswick over Montreal and elsewhere in Quebec. Canada's Mens Soccer team has already
greatly improved with additions of players of West Africa descent. Morocco; however, was the first African country to place in the top 4 of a world cup. If Canada could sustain and increase African immigration while cooling down on other areas of the world, I think we could see Canada leap frog the USA and actually compete for the World Cup of Soccer within the next two decades. Many of the best footballing countries in North and West Africa are French speaking countries, there's a co-related sporting interest involved beyond just increasing immigration. It would be great to see Atlantic Canada get at least three Canadian Premier league teams, and see more players signed from Africa to come play in our league. More flights between Atlantic Canada and Africa could help make that possible.
Atlantic Canada's political and economic elite should try and take advantage of the comparative advantage we have in being closer to Africa and Europe than the rest of Canada. Flights seem like a good place to start.