I agree with @mike and @CrazyMyra that the 60K limit's problmeatic and with @brian about the problems of the "make the big sites bigger" approach. What's really needed is a series of questions that matches people to an instance where they're likely to have a good initial experience -- good moderation as a minimum bar, and beyond that based on geography, interests, or diversity. Sending everybody to .social is likely to be counter-productive.
spreadmastodon
mike