[booji]

Possibly, but many of the fleets based on cr or bs have big ally def problems which is most damaging to just those "mid" and "low" those alliances that benefited most from ally def improvements last round or else have very spread out fleets. If anything I would be more concerned about what you are presumably calling the "upper" tier of alliances who are good at regularly prelaunching defence who should benefit most from such a stats set. That is of course not to say that you won't be correct but there is certainly a downside for them.