I don't know if that would be a good thing as I don't think we'd fill it. I'd rather have a stadium around 50k that's really tight with a great atmosphere than a huge thing with about 6k spare seats. There's a reason why Liverpool have more seats than us, they have about 10x the amount of fans as us and demand is huge, building a bigger stadium isn't going to change that.
However to build for the future is sensible, we have a huge fan base and working on the assumption concessions are sensible why ever not? We will make more on corporate, excellent facilities and merchandise, itís win win after all empty seat cost nothing, full seats are full seats