I think it has to be done well, with some effort on the part of the writer. I agree, in that I enjoy human interaction when written well.
Right now, there are, once again,
way too many mutant characters running around, Guggenheim has his work cut out for him to vary the focus around the main team members. So far, it's been essentially about Kitty. That's a throwback to the formula that's gotten the books to this impasse. Before, it was Cyclops and Wolverine. Now, it's Kitty in Gold and Jean in Blue.
I miss books like Excalibur, that had a rotating focus. It was impossible to look at the core 5 and pick out one of them that the story revolved around all the time. That's what I want to see happen again. I really hope Guggenheim will adjust his style to achieve that.
Anyway, to return to the point, when there is a strong varying focus, and all the core team members feel important to the story, I think it's a lot easier to introduce external (human) supporting characters. Right now, "supporting characters" are on the team
I do like that the Rachel/Kurt thing brings a soap opera element to the book. I've missed that. I think that element was an integral part of the X-Men's success in the past.