Been thinking about writing some code to style a ArcGIS FeatureServer output based on data I’ve joined and do that as a fast to create and load maps, especially of large datasets like every municipality in New York State or every county in the United States. Most counties and the census bureau now provide FeatureServer data.

As the ArcGIS feature server does all the simplification server side and the client only requests objects in the bounding box, in theory it could be a lot faster loading. It would be neat with the new block level census data coming out for redistricting purposes and all the other public data from LATFOR including counts by race and past election results.