The ability to make clusters distinct from individual points would be immensely helpful. Clustering in it's current form is a great addition to the API, but not being able to simply change the symbol for the distinct cluster is a limitation among a feature with a great deal of useful complexity (like querying the features within a cluster and creating a convex hull).
Would the development team please consider exposing all rendering properties, including the symbol property, in FeatureReductionCluster?