Let's create a 'League of Lichess' !

That is a nice idea. There exists something similar, the lichess 4545 league. It has about 30 teams, with 6 players in each team. It has 8 rounds. Every player plays 8 games (45+45) in lichess in 8 weeks. For more information, go to that page: www.lichess4545.com

@mrzmsmglsnk .. Team chess is simply to strengthen the community! Players identify themselves with the team. It's much more exciting than individual chess.
@loukas435 , thanks a lot. I will look at this 4545 section.
Can I access it also through the site?

It is not easily accessible through lichess. Go to the page I have mentioned in #11

Yes I see it's another site. And you need to install slack. Don't know this tool, but if it's for free, I will give it a try.

It is free.