This build seems to address the bandwidth issues. http://build.technicpack.net/job/Machine-Muse-Power-Suits/288/changes Here is the full change log/commits? http://build.technicpack.net/job/Machine-Muse-Power-Suits/changes
One very dumb thing that MMPS seemed to do was send data about every player to every other player. Therefore bandwidth usage was exponential (for the server at least).
Unless it's possible to try it on a server with as many people as alice has daily, I don't think it'll really be possible to test whether or not the issue has actually been fixed or whether it's just stipulation.