The game design team was not ‘under’ Ken or Roberta Williams. Ken did have some input at the beginning, just watching what was being done and commenting, but Ken and Roberta don’t have the time or interest to be integrally involved. Ken’s main hobby project these days is of course the continued programming and designing of the talkspot.com system, and I suppose Roberta is still working on that book idea of hers that was mentioned some time ago now?
Also, doing a game is not just as easy to start as saying such person (whoever) should write the story. There are HUNDREDS of things that need to be taken into consideration when starting a game and it is all of these things that bogged down the first attempt.