A318 could do LCY but A319? That'd be pushing it, I think. As for parking, there are a couple of options the way I see it. They've been talking about a new apron for a few years, so if you just extend it a little (it'd be out over the water anyway) that's no big thing. The other option is over by the business aviation apron where there's a building coming down anyway. Would the A318 make sense? Yes, I guess so. By my reckoning, looking at its performance figures (and running them through my perfomance calculation program), it'd make Vienna, Rome, Madrid or Barcelona (and return) with full pax (I'm using 122) - more than any other aircraft is doing today, really - and Frankfurt and Paris easy-peasy.