Now Blood is a tanking spec so it's passable, and at least in PvE this might be up for debate, but does anyone honestly absolutely get enraged when Unholy is ever pushed as a stronger spec than Frost in any way? Just because not only do I truly despise playing Unholy, but thematically Death Knights are icy death at heart. It's amazing Blizzard respects this enough to give Frost DKs arguably the most badass (and iconic) artifact weapons, but I can even feel as someone who's loved Frost since Cataclysm that things just seem underwhelming or remarkably boring at the moment. This could have been an opportunity to give Frost so many cool talents or ideas, but they blew it. Then I gloss over all the insanely creative and admittedly cool stuff Unholy either gets new or from previous expansions. All Frost gets is shit to make you hit harder and that's it really.
Edit: Being more specific on the Frost part. Why does everything I theorycraft on for the expansion or observe center around Obliterate? It's just so dull. Even the best max PvP talent is FUCKING KILLING MACHINE 2.0.