My thoughts are on Dave G. as a designer. It has nothing at all to do with any of the bugs that were in T2 at or after launch. He's not a programmer. He didn't put the bugs in T2, the programmers did. However, he guided the team with a series of design decisions that I disagreed with. He oversaw changes to the game post-release that I disagreed with. I do not think he is a good designer based on what I saw in Tribes 2.
And yes, I happen to think T2 is a good game. I spent many hours playing it. Doesn't change my mind about the design, though.