Tournament types

I would enjoy the site much more if there were:

1. Round-robins.
2. Swiss tournaments.
3. Quad + knockout tournaments.
4. Simple knockout tournaments.
5. Options where you can "Start tournament after 70 entries".

That would help lichess A LOT.

Thanks!

These could be interesting, but how many people would be guaranteed to not drop out, during a long round-robin etc.?

I prefer to add Olympic tournaments