Sync Compatible With the Browser

Hey, I know that there’s already syncing with our Phone as a backend, but wanted to request potential integration with Firefox Sync.

My team and I are currently building a fork of Firefox, tweaked in a manner that grants it more usability & tweaked security for the purposes of ensuring users can surf the internet w/o installing a million add-ons (with an occasional malicious spying one), yet still truly browse the internet the way it should be done (i.e., not having a bunch of page breaking, etc.)

Having the tool sync w FFSync would be helpful in countless ways

What data would you expect to sync? Everything or just the history/bookmarks?