@snailcar Hm. This version sounds a little redundant, but is it really that weird? Especially if you wrap it in a sentence beginning with X is a proposal..., where X is a type of proposal that's being defined/described. I think what's coordinated here are those two clauses, so I suppose it boils down to what you make of it or how you interpret it. In any case, it's a question that needs some clarification.