My logic tells me that if the GCC leaders are willing to admit, with such haste and on such a whim Morocco and Jordan, doesn't it signify that they are in a position of weakness -or expect a severe and impending threat to their thrones. This grouping isn't the EU, the functionaries of the GCC work for myopic rulers with reptilian concerns; they want Morocco in the club because it's a Sunni monarchy that has proven itself willing to do an Arabian bidding here and there. That's all the Gulf states really need to help put down (to bloody) their domestic encounter with the Arab spring/insurrec tions, or Iranians leaping across the Gulf to rescue the Shiites. Should such combat arise, we will only earn the masses enmity, and should the masses succeed in overthrowing their rulers, they will become custodians of enough petro-dollars to revenge against us. Such long-term enemies are not what we need.
Secondly, along with the likelihood of Moroccans killing and being killed in the Middle East, there is the certainty that democracy cannot progress among GCC member, sorry club rules. Moroccans will not be happy with any stalling backsliding in democratization.
It's more complicated that that for sure, but not really...like I said, reptilian concerns.

Here again. Somehow every one just assumes that the post revolution Egypt will necessarily be anti-Saudi, anti-American and pro-Iranian. That is extremely unlikely. The recent overtures of Cairo are unfortunate teething symptoms. Whomever comes to the power after the elections will have to meet the demands of his people, that is better opportunities, more equality and economic prosperity. Without the life lines of American and Saudi aid and investment, not to mention trade and remittances, it's simply impossible. Iran is a paper tiger, not even capable of precessing its oil, selling it but, liquefy its natural gas, relying on Qatar for this, or import without the help of Dubai's ports facilities. It retains a noisiness factor and can do harm if it wishes to, but Iran is in no way capable of helping Egypt economically, and will only make it a pariah diplomatically.
So, if not by affinity, Egypt will come around by necessity.

That said, those who till now touted the Arab economic complementarity and routed for it at all occasions are the first to point to the differences between Morocco and the GCC as insurmountable. The transaction isn't clear, what Morocco will give and what it will receive from the GCC, but whatever it is, Morocco can't be too choosy. The GCC have no hold on Moroccan politics, nor have they any sway on how things will develop here. The idea that this is an anti arab spring initiative is ridiculous.