Hmm, I was gonna include this in the new version of the leagues.
Giving medals to the 1st, 2nd, 3rd in each scheme and in each season.
Back to subject, I don't know why out of a sudden you think of a new league. Why don't you try the current running league? It is the result of lotta experiences and many tests.
Other than that, I think Cups and Tournaments works best for 1-scheme contests. I'll be releasing Cups soon, I've coded it based on my experiences on the previous cups running on the community and I expect it turn out well. All being said, Still if you find people who really like to play an individual league for rope schemes, I'll code it

@reward thing,
Some people have started asking me again to put some prize. I was thinking of putting some money for the season #9 of classic league, But I don't know what will happen to season #10 if no prize is set for that.