I like this. I will vote for it.
I think its awesome that you don't put a timeline or put specific conditions on HOW to achieve this.
I fully support splitting the rewards in half for the regular league and half to an attempt to make a human only league for ranked play.
NOTE: to those who want a proposal on this topic to be perfect, I would say to be honest with yourselves. There's too many moving parts, too many unknowns, and too many opinions on the matter to please everyone. So starting with something is better than just keeping things as they are and letting people continue to leave the game out of frustration. This proposal if passed, will offer those that care about human competition a thing called "HOPE".
RE: Splinterlands will try to implement anti-bot measures in Modern format.