Will Preferences be behind a paywall?

I think it'll be base game, with a few interests exclusive to the pack. Favorites are something that aren't necessarily tied to the pack, and would benefit from being expanded upon in future packa.

But who knows? If they end up being locked behind a paywall, you jlcan just wait a couple of years and they'll patch it into the base game, or throw it on another pack that's lacking content.