Wouldn't mind updating and fleshing that out a bit more with additional examples. We both like the mapdeck package, and I think the tmap package provides a great high level api for quick maps that people would find useful. Any others that you would want to include?
Downsides include needing to configure a couple of things - mapdeck, for ex, requires a mapbox api key. We can simply not compile those examples on CRAN, like we do elsewhere, but would need to set it up for CI on github. Easy enough.