Actually, my plan would give more credit to those regional identities and give those regions greater influence over themselves and in their greater autonomy. Europe is simply a knitting net which holds the collective will of the 'West/Europe' in terms of foreign policy in regards to powers who are not part of Europe. Whilst I do believe in that we should be "united", I don't think we should sign up for a very centralised government, system or federation.
Though ideologically speaking, it isn't 'simply that', it is only a stepping stone to further changes, this is model replicated in other large geographical areas, such as North America, South America, Africa, Asia, etc. Then ultimately once they harmonised to a sufficient degree. These large areas end up merging into a Global Federation based on this model. Once this is in place, the Federation government is weakened furthermore (due to lack of there being anything 'Foreign', unless Aliens come randomly.)
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