Interesting Andrew. A local Irish financial news guy I rate just tweeted me something interesting. I asked how fast will it improve the € $ Rate from our end. He replied with:
"Some economists forecasting €/$ parity next year."
So this EU QE thing might, in fact, be good for you guys??
The other thing to look at from your perspective with respect to Europe is this new EU VAT / MOSS rules that came in Jan 1st 2015. Only applies to digital downloads. Basically it means the buyer pays the VAT rate of his/her country at source ( your site ) rather than the old way - pay the VAT rate of the seller. Not sure what impact this will have on your VAT ID initiative.
This was brought in to Europe to stop Amazon, Google etc selling from the lowest VAT jurisdiction in EU - Luxembourg. Again the few screw it up for the many ...