I agree with everything here. Maybe have the leaves to either side and have some bare sand up front. Look great!My “other” vote was to say two things. First, both are awesome scapes. Second….if going with the leaves, maybe do 50% of them whereby the leaves will nicely compliment the sand, not hide it.
I appreciate the heads up.If the leaf litter is excessive, it can create water quality issues as it decays. Thus, be judicious.