Greatatlantic
Erudite
I never heard a Beth person claim they were doing dialogue trees, just what they were doing was a sort of cross between dialogue trees and wiki-talk of Morrowind. Its something new, so no one really knows if its good or not, but I'm sure we can heap tons of judgement on it when Oblivion comes out.
As for modding, well no game is going to be perfect for everyone, and 500,000 people experiencing a games generate a lot more ideas than 50 people making it. So, well done modding tools are a good thing, and even the best of games that ship with out mod tools will get people who figure out ways to "mod" them, not necessarily making them better just different for somebody who wants something different. However, no game should ever be dereft of quality before the mods, then its just a bad game.
As for modding, well no game is going to be perfect for everyone, and 500,000 people experiencing a games generate a lot more ideas than 50 people making it. So, well done modding tools are a good thing, and even the best of games that ship with out mod tools will get people who figure out ways to "mod" them, not necessarily making them better just different for somebody who wants something different. However, no game should ever be dereft of quality before the mods, then its just a bad game.