Microfrontends: how can we optimize only for developers to the n'th degree. Throwing away performance, UI/AX consistency, and predicable design out the door (dramatic). If, we were still doing systems programming microfrontends makes sense. But this is the web. Diff constraints
Then it's not so different from installing a library from the internet but just with 'application features'. This way of working allows a team to diverge in their approach and deploy their individual feature separately. But they must share code to appear within the same app.