If you would like to request support of an R package not found in that list, please submit your request.
The current process for updating R & R packages is not working. Many of the supported packages in the Power BI Service are out of date. It appears that this is a issue for many users, and would probably be widely supported, but the 'support' metric that MS is using is dilluted across the many packages in use.
Regular updates to these supported packages should not require community support for MS to do it.