I'm just happy the Ponds have finally jumped ship. I loved Rory so, so much but Amy definitely overstayed her welcome for me. I really like how Karen Gillan played her but I'm nooot a fan of Moffat's writing and generally haven't really liked any characters a whole lot since he took over in series 5. :( But hopefully now that there's a new companion, the show won't feel so stagnant?
I'm also worried that Clara will be much of the same again. She follows the same "strong female character" archetype that all the females have now (sassy, flirty, & occasionally kick-ass until the Doctor inevitably needs to save them) and while simply having a new actor in the midst is a breath of fresh air, I'm hoping she breaks away from that a little more and becomes a truly unique character so that we don't just have River 2.0.