I'm concerned that lower lever opponents will take it as me trying to get more wins from them (leaderboard doesn't get me anything so I'm not too concerned where I am on that). In actuality, I'm helping them as I'm giving them a buck and some bonus foams, also I'm short changing myself from the bonus I'd get from playing another 5 star town.
I'm somewhat randomly playing neighbours: one a day with 1 star differential for brockman daily, cycling through one lower town a day, and the rest is a cycle through 5 star neighbours.