One of the things I would miss here on Mastodon was all of the alerts from my local infrastructure and government twitter accounts. These will likely take a very long time to make the migration.
With https://bird.makeup, you can create bot accounts that put those tweets in your Mastodon timeline. For instance, I follow the Washington State Patrol account for regional weather related road closures and accident reports:
@paisley_peinforte @awilbert Mastodon.social bans all twitter replicators by policy, you'll have to move server if you really want to use any of those.
@vincent @awilbert Ahh. Thanks. Food for thought.