It's been a long time since an in-game "pack" has been enough to get me to pre-order at one retailer over another, but the Doom Pack for Brink is calling my name.
This brief video overviews the contents. For those unwilling or unable to view it, here's a quick list.
Grab 22% off The Elder Scrolls Online: Tamriel Unlimited (now with no monthly fee)
5:00 PM on 03.19.2015