I do wish that the Doctor Who trailer were an actual trailer. Like, wedging in a few clips amongst the behind-the-scenes stuff is a bit frustrating for those of us who try to avoid the behind-the-scenes stuff. Of course they've only just finished filming so it's fair enough, and it's nly a minor complaint... it looks like it could be good.
The second Class trailer is very different to the first. Looking awesome though, and I love that they likened it to both Buffy and Once Upon a Time directly. The show already seems quite self-aware which is a good thing, and the Doctor's speechless response to the likenesses was priceless!