I like BT and I like FEI. My characters have huge history on both. But I agree, they should go first. Amongst other things, consider what a difference it would make if EC suddenly had to deal with a group of nobles determined on founding New Arcaea, a group of Sartanians trying to revive the Church of Ibladesh, Thalmarkinians running amok, etc. Yes losing history would be a wrench but I think that most players would rather play a fun game where their history can be used as an excuse for conflict in their new home than a stale game where there's lots of history to remember but not much going on.
