@CrazyMyra @Gargron Actually I just found the bridge and find it really useful.
It's not so much a federation between Twitter and Mstodon, as it actually just recommends your friends, but rather a "find your friend" on Twitter (migration) assistent.
As such, it should always be introduced/linked for beginners. When you want to switch, you want to have your followers, too. That's kinda the biggest hurdle you have to handle as a beginner.