Battlefront really do know how to treat their customers, although as I mentioned a little while back, I'd go for phoning for replacement/missing parts over emailing. It's taken about a month for the missing pieces to arrive, and as per usual, they came with extras.
I did however notice something interesting with my replacement bases; they've been updated.
Rather than a smooth shiny surface to stick your miniatures on, they have a slightly textured finish. Why they did this I'm not sure, as you'll still want to score the base before gluing/basing.
Another difference is on the bottom. The bases now have little - nay, minute - pin-head feet, and notification that Battlefront own the copyright for the design...