End zone seating is not desirable for gridiron football games (CFL/Uteck/etc.), but for football events such as FIFA, MLS exhibition games, or anything similar, end zone seating would then be possible to a very small degree.
When I was in Columbus for a MLS Columbus Crew game I noted how their stadium was set up with permanent seating. It holds about ~20,000 for football matches. The end zones can be seen below.
If you are constructing a stadium in Halifax with 10,000 permanent on each side and then leaving the end zones open for temporary seating I would see no problem with that whatsoever.
The sideline stands looked like this: