I would love to see this feature implemented. We run a league system for Chaos Reborn and at present we have to either settle with only 1 match against each opponent, or if we want to do home and away fixtures we're making use of MS Excel and then posting the result online.
You can already set up 'Best of X number of games for cup' it just needs the same functionality for Round Robins.
This would be really nice if you wanted to change team members around for a round robin style tournament.
Round 1 AB vs CD
Round 2 AC vs BD
Round 2 AD vs BC
Am I understanding the suggestion correctly?
Again this would be a great feature to have - I'm constructing tournaments for Chaos Reborn which allow match play modes of 1v1v1, 1v1v1v1 and 2v2. It would be great to be able to round tournaments using these modes within the Challonge site.