We built a lot of technology before settling on the current incarnation. Remember we attempted to start this game right after Daggerfall, so things have changed quite a bit. It's also hard to stop adding things. We recently changed the landscape system and are in the middle of that now. It's going to look even better than before.
Technology is like a drug-addiction for game developers.
We have water and fire and things to tackle yet, after that we should be done with the tech. Contact us for more information on GameSpy Industries.