Delixe: I didn't mean to imply that dumbing down meant the game wasn't deep I was using the term as people refer to streamlining.
Yeah, but that's not really dumbing down though, is it? Games like Oblivion were dumbed down as they removed a lot of content from their predecessors as well as streamlining and refining.
As you say, it's all still there, just in a way that doesn't require reading the manual to understand. It's the product of good design and that so often is mistaken for dumbing down when I really don't feel that's the case.
The problem is that a lot of the deeper games out there always used to be created by people who knew fuck all about design. Now things like interface design is a whole separate career path unto itself. The result of that should be games that are more easily understood.
Of course there are an ever increasing number of games focussing on mass market appeal as the foremost consideration. So these improvements have often gone hand in hand with actual dumbing down. I just think it's important to differentiate the two as even the most hardcore sim can learn a lot from modern big budget mainstream games.