Graz
BA318, you are absolutely right, my neighbour works for JLR and goes to Graz at very least once a month. I hope some decent 'leisure' fares do become available, as it's a lovely city to visit.
Very happy VIE is finally back on the routes served from BHX, this used to do very well in terms of loads (no idea of yield) when served by BA/Maersk (albeit on a much smaller aircraft....I hope this route can sustain an A320 long term).
HEL and RIX would be nice now but in terms of European capitals, BHX has currently got nearly all other realistic ones covered, a huge improvement on the situation even just 5 years ago.