Hmm... Maybe a single button down by import/export to push the current settings to all accounts.

It definitely needs a way to sync some settings (most?) between accounts. There are some I would not want synced when performing a settings sync. For one, I really like how each account can have their own image download folder. That way my, uh... one account's image downloads go to a hidden folder. I also have a different view mode set for that account.

What I did with Sync for Reddit was setup one account the way I wanted most to be, then saved a settings backup into a folder called "Default". When I needed a new account for some reason, I would set that folder as that account's backup folder and load the backup.

It worked "OK". The problem is when you find a few other little settings to change on one account and have to remember to do another backup so you can load it in your other accounts at some point.

I feel like everyone's going to have their own opinions on which settings should be the same on every account, and which should be separate. The sensible thing is to have them all be separate with a way to sync them between accounts, which is what we have now. A simpler "settings sync" feature would save about 6 taps after adding a new account. Six taps really isn't a big deal, but it would be nice to have that feature.