Campaign Medals.
Really SE? You're going to take away my medals that I've already earned in CB just b/c I have other stuff to do than to CB to keep my current/work on getting the next medal?
Granted the experience needed to keep your current medal and renew the seal on it is minimal, but I've never understood the logic behind this at all.
Edit: Something else that just came to mind that grinds my gears even more than this.
WoTG vs. the newish mini-expansions. Why on earth is SE working on so-called "mini-expansions" when WoTG which has been out damn near 2 years isn't even finished mission wise???