User blog comment:Kaloneous/Mass Effect 3 Ending DLC Denied and PAX/@comment-1841436-20120320221509/@comment-118213-20120320232900

Ok, they create new Mass Relays - how do you envisage them placing them? Each one they construct will have to be placed to allow for quick travel - moving them at FTL speeds will mean it could take hundreds of years to just place one Relay.

The Relay the prothions created also only managed to travel in one direction.