If they did a lot of their sound work, etc. at Junction oval in Melbourne it's a wonder they didn't try to recreate that. Not that sound work and creating an in-game stadium have anything to do with each other, but just a thought.
Personally, I'd like to see the grounds with the most varied pitches get made. Eg., the slope at Lords, the hard deck at the WACA, the spin friendly dust bowls of certain sub-continent pitches or some of the tiny grounds in NZ where the boundaries seem to exist on the fringes of the infield . I think it would be more interesting having different grounds that actually effect gameplay rather than it being just a graphical thing.
It would be great if eventually each ground had it's own character as far as pitch characteristics, deterioration, outfield, crowd size and behaviour, etc. go.
It just wouldn't feel right if you went to somewhere like Lords and it played like the WACA. I wonder if the randomness of pitch characteristics and weather are somewhat limited in-game so as to be slightly representative of where the ground is in the world.