It would be almost jarring if in sims5, they decided to crystallize the game firmly into the "canon" of just one previous game instead of making a vague new amalgam of them as has been the case all along.
And I doubt they would make a game in which it's now the kids of the various townie families, because that would mean they would decide for all players, who married whom, and who and what their kids were. That takes away those choices from players.
Imagine opening a game to find that someone else has decided who Cassandra Goth ended up marrying, so you don't get to, for instance?
It would close the book on things we all love doing differently each time.
