I am fine with blue being a single player experience. However Square decided to keep them out of single player content like PoTD, HoH, Eureka, Bozja. Kind of idiotic to do that on what was supposed to be a single player experience on an MMO.
Allow BLU to enter all single player content. And allow to get ALL MAGICS without putting a single feet on a dungeon. No one is doing fates anyway. Having blue getting the magics from them would solve that.
Honestly. BLU is something to do when there is content drought. It has potential, but as it stands, is just bad design.