Good points. I think you're right that it strongly depends on the application. Only apps that could be considered platforms in their own right (e.g. flotilla, primal) should probably do this, since the exploratory dimension isn't part of that app's value prop (even if they are a bridge to the wider network). Maybe this could be solved by making the original app a bunker? "Log in with flotilla". But this would probably only increase the lock-in to the original bunker, which is the opposite of my goal.