Because we wanted consistency. Have the same encoder for the series, so that you're not jumping back and forth between qualities and whatnot. It, obviously, didn't work out so great....That's part of the reason why we're going through the episodes one at a time. (And having clear division of translation responsibilities; e.g. splitting even/odd) (Although I fail to see how having something wrong somewhere would force you to start "alllllllllllll" over.)