I dont think hackers could take advantage of this... far as i know, the introduction of weapon modding hasnt allowed them to use all-powerful weapons in other servers either, they still have to "obey" to the server's weapon settings. I think it could get quite annoying though if every server has other speed limits... maybe if a UM (Unit-Modded) filter was included, ánd if u could set the filter to both only UM and no UM, it could be nice. Otherwise, no.