This is from my Discord post on the Competitive server:
Any further ideas, feedback is very welcome. Also if you can provide examples / links how the ladders are run in other communities.@ Ladder Rules & ELO
I just checked clanwars.cc again and they obviously have a ton of experience with running ladders and documented their rules in detail, including the point calculation:
In the end ELO pts are calculated as such = K x E x W x O
K - K value (explained above)
E - .01 to 1 (based on if the underdog or favorite won and how close in rank they were)
W - starts at .5 on day one of a new tournament and grows to 1 on the last day of the tournament
O - offset starts at 1 when same clans play against each other for the first time on a day, second match it is .9, third match it is .8, etc...
After 10 matches against similar clans it is .1 and stays at .1
Source: http://clanwars.cc/league_support.aspx?GID=12 (They came up with 15x rules, which apparently was enough for them)
See also: https://en.wikipedia.org/wiki/Elo_rating_system
So the best strategy is probably to take their stuff as a basis and adapt it to our needs. I can create later a Forum Thread to properly document our finding as those things just parish here on Discord.
There more I think about it, I guess it would be a good idea to approach the Clanwars.cc Admins, maybe they are interested in putting the rankings on their homepage, as it is another cnc game. Of course we should not limit ourselves to them, but the amount of visibility we would receive would be massive, as the ccg community is still rather active there.