A Middle-Eastern superstate?
Where did you guys come up with this?
I don't think that the Elite in many ME countries would cherish the idea of sharing their power with any of their peers in neighboring countries let alone people of different countries sharing space with other people from the region. If you're talking about Pan-Arabism or Pan-Islamism, both ideologies are moribund and can't be taken seriously in any meaninful discussion.
Which creates instability & low-level wars, which they'd prefer to having a stronger state that would contain that sort of thing, but which might challenge them on the international scene.