the problem with trying to become "the new twitter" is that the part of twitter people actually like is that literally everyone is there. you get one account and one feed where you can see your friends, memes, artists, musicians, local government announcements, news stories, game releases, etc. no one likes twitter, they like who's on it. usurping twitter as the social media website is just about who reaches critical mass first.
then the problem is that the infrastructure needed to serve that many users literally requires being funded by venture capital, which forces you to generate infinite growth forever to keep investors happy, so you're forced to adopt the same user-hostile design pressures that made twitter so fucking awful. any twitter replacement will end up subjected to the same incentives, so will end up as just as much of a hellsite as twitter is/was.