Then the web interface wouldn’t work anymore and that is very important for those features, especially as we integrate with the Mail app and also (work in progress) with the audio/video calls app. So don’t count on this, it makes little sense.
And worse, it would break compatibility with every application out there (no way your phone could use it unless we built a unique calendar app. Same with your desktop applications, outlook etc) and you wouldn’t be able to invite people anymore or share calendars… I don’t think this makes sense.