Eh, I just toss reference numerals into my claims and the abstract, make my claims have multiple dependencies, cut my number of claims down to 15, and call it a day. Saying something potentially damaging to your US case, in the hope it will help your EP case, is pretty shortsighted for most industries where the US is the likely venue you'd use for enforcement. (on the other hand, if someone is only likely to infringe in europe, then i'd suggest euro-izing your case more. i'd discuss all close prior art, discuss the problems faced by prior art, how your invention solves those problems, etc).
The biggest thing you can do to help your chances of getting an EP patent is to hire an EP attorney to assist with prosecution. This is so much more important than anything you can do to euro-ize your app. EP prosecution tends to be a lot more predictable than US prosecution, so having an experienced EP attorney who can say "this won't work" or "this is likely to work" is very valuable. Also, sometimes there are some arguments that can be made that US attorneys just don't think of, because the involve the intricacies of EP law.