Insufficient options for rate limiting
20 Mbps as the maximum limit is not sufficient. You can't watch 4k Netflix on that, it is slower than most lte connections. You might want people to surf faster than this, but not be able to clog up a 400 Mbps line with a game download on Steam.
Furthermore, Cloudmanager forces you to either not limit download and upload, or both. With 20 Mbps being the fastest limit, on my 1 Gbps cable connection I don't want to limit people to that speed. However, I do want to limit the upload, as with cable uploads speeds are significantly slower than download speeds.