I like this idea!
Format ideas

We definitely want it to be 2 days per move, and it should not be too many simultaneous games. But it definitely shouldn't take a long time, either. I think 4 boards per team and all-play-all is a good idea. Also, all games should be no-vacation to prevent long vacation delays.

if it's a team version maybe each team gets 7 players and they all join a club a team captain makes and to make the pairings they challenge each club? so if we have 4 teams they each challenge everyone and the winner is the one who win the most matches??

if it's a team version maybe each team gets 7 players and they all join a club a team captain makes and to make the pairings they challenge each club? so if we have 4 teams they each challenge everyone and the winner is the one who win the most matches??
Probably better is 6 per team but this is an idea, also tiebreaks would need to be predetermined.

That could theoretically work, but we want the league to be as fast as possible, so waiting for every single game to finish would not help.

In the HQ, the format has been basically narrowed down to groups of 4 (8 or 16 teams) each team plays every team in their division in an all-play-all match, and the top team in each division moves on to the playoffs. There also might be wild cards (chances for 2nd place teams to qualify for the playoffs)
But the playoff format is to be determined.

No matter what the format is, you must make it so that the clubs actually make a team match so it is simpler. Will their be an average rating cap, and how will a players rating be found?

See my league (ICTML)’s first tournament. 4 round robin groups of 6, winning team from each group joins a new round robin to determine the winner.

No matter what the format is, you must make it so that the clubs actually make a team match so it is simpler. Will their be an average rating cap, and how will a players rating be found?
There will be:
- A rating cap
- All-play-all team matches
- Round Robin groups of 4
There will likely be:
- Timeout restrictions
- Avg. time per move restrictions
- Wildcards for playoffs
Playoffs format is still TBD

See my league (ICTML)’s first tournament. 4 round robin groups of 6, winning team from each group joins a new round robin to determine the winner.
Yep, but the playoffs probably won't be a round robin.

No matter what the format is, you must make it so that the clubs actually make a team match so it is simpler. Will their be an average rating cap, and how will a players rating be found?
There will be:
- A rating cap
- All-play-all team matches
- Round Robin groups of 4
There will likely be:
- Timeout restrictions
- Avg. time per move restrictions
- Wildcards for playoffs
Playoffs format is still TBD
how many per team?
I see majority of players here come from Live Chess background, so as an experienced Daily Chess player I guess I am the right person to give some ideas for the format.
First of all, this league will take long time to finish. There is not really much to do about it. Deal with it or don't join.
To make it not extremely long, I suggest that the time control be 2 days/move. The "standard" for Daily is 3 days/move, we can also try it but accept only the players who have average time per move <1 day. 1 day/move control is a trap, it makes the games short, but the 24h window is really short in practice. It's easy to lose on time even if you are on chess.com every day. I suppose we want to play chess, not hunt other players for one off day.
Also, it will be good to start as many as possible games at the same time. So instead of Swiss elimination phase, make it in groups (like FIFA World Cup for example) and run all matches at once. I guess the first season won't have too many teams, so probably two groups all-play-all and then take top 2 teams from each group into playoff.
About match format, I think PCL-style of 4 players all-play-all makes biggest sense. A lot of the players here have played very few Daily games, so it's hard to accurately estimate ratings. This would make b1-b1, b2-b2, ... format pretty much random.
Assuming 8 teams in 2 groups, this makes 12 games per person at once. It sounds okay to me.
About technical stuff: there is no need for negotiation threads here. Just one thread telling what games are to be played. In one Daily league I'm playing (Team Poland League, individual) the rules are that white creates the game invitation and the games have a unique title (LTP-season-tier-round). I think it's a good system.
If the admins find it useful, I can join the admin team from the technical side (working out the details, working on sheets, posting the pairings, etc).