I am working on some code that extracts total radiance of country regions using polygons from http://www.gadm.org. I have expanded it to be able to calculate total radiance at the lowest sub-national level and crops the tiles to the country outline for 1. faster future data extraction and 2. possible display. Currently also playing around with a shiny interface that allows exploration of country data and possibly integration with other data sources and simple model building. As I keep going I am wondering if it maybe could grow all the way into an R package.
So far I have the satellite package seems closest in functionality, but this is a much more low level interface, from what I have seen - it deals with raw data and applying atmospheric corrections etc. It also seems mainly to deal with Landsat (as opposed to SNPP/VIIRS) although it seems the package has the potential to expand to other satellite data products.
NB: I am also considering offering the option of the package connecting to a commercial service for those who want the data without having to download and process the tiles and am not sure how this is viewed by rOpenSci/CRAN?