Yeah, I think that makes sense. It really depends on how Feige goes about introducing mutants and explaining why they've been absent in the MCU until now. If it's the case that they've been hidden, then having a homeland like Genosha or Utopia makes sense. If there are other forces at work, it may require something else beyond the X-Mansion. But I believe having a mutant homeland is a big part of stirring the mutant/human conflict and I think needs to be part of any major X-men story in the MCU.