As a guy that is a pretty big shipper and is very into pairing characters together in games like Fire Emblem and Persona, I would actually really like some pairings to be canon. It means that we would get more content related to that pairing compared to a non-canon pairing. This could upset some people that aren't fans of the pairing, but you can't please everyone so it's not that big a deal. Honestly, it just depends on the pairing. If it was for example Tharja x Robin, I would be upset but if it's like Cordelia x Robin than I'd be pretty happy.