There are no structures to articulate any divergent interests that may exist between North/South, East/West, Protestant/Catholics although states can of course form alliances on an ad hoc basis - typically on a regional basis but their can also be regional rivalries and divergent interests.  

Thus countries with a strong agriculture sector may ally in support of the CAP, countries with conservative Governments or pro-US policies/cultures may ally on certain issues.  Social conservatives may ally via the Churches, but they really have very little direct power or influence.

One of the reasons Libertas is interesting is that it may be an alliance of pro-business/nationalist and social conservatives - all of whom want the EU to keep out of their free market business affairs/national affairs and to minimise social/secular influences on their state/religious politics.

I agree that sometimes boring politics can be a blessing...

notes from no w here