A Twitter API->nMastodon API bridge server that covers a handful of the most popular API calls would probably be really popular. Yeah I know it's an easy migration but people (myself included) are lazy, the less work to move over the better.
Mastodon is the best way to keep up with what's happening.
Follow anyone across the fediverse and see it all in chronological order. No algorithms, ads, or clickbait in sight.