Mystic Destinies released different from Anicon. I have both (only Steam version) so I think I can give you my opinion.
Mystic destinies released the game demo as base and allowed you to unlock a route by buying the route dlc. I have the full game (bought all routes) and all of them are accessible by running the game demo.
So in Bermuda, it would be the current demo then each dlc purchase unlocked its respective route in the demo. To play a route, I would only need to run the game demo and select the unlocked route I bought.
Our Life: Beginnings & Always also have the same strategy. They are on steam and itch if you'd like to check. (I was not paid to promote the game)
Anicon releases routes separately as each route is a separate game.
So applying this to Bermuda, it would be each route as a separate game.
I have nothing against it if you decide that it is the best course of action to release your games route by route.
However, I would prefer the way Mystic Destinies released their routes. For me, it's convenient to have the game demo unlock routes as I purchase each route dlc, rather than have to buy multiple routes and all of them are separated games.
My limitations in English don't allow me to form a better explanation of my points of view, so I hope I was able to convey my opinion and help you with your decision.