Imaro
Legend
Game design is such an art, I don't think you can formulate what works. Of course it's his decision.... a game designer's best effort that they think is cool is probably one of the better designs you are going to get out of them. Of course, if you think you can get 2% more profits doing a little backseat designing, go ahead and burn out Mike Mearls on your project. Independence is both a blessing a curse.
Honestly, 4e is obviously the product of the WotC designers doing whatever the whatooiee they felt like, either with the blessing of management, or the tactic acceptance by suits who don't understand the game anyway. 4e is a textbook example of a creative group of people doing something really amazing by following their own instincts. Unofortunately, the zeitgeist is not as happy with the result as perhaps some had hoped, but that's the risk of daring to do something good.
I think 4e is pretty stinkie, but there is no doubt in my mind a lot of people are proud to have designed it, and it provides genuine enjoyment for many of the people who play it.
This has nothing to do with my post... what I'm saying is that regardless of what Mike Mearls wants to do there are certain design and development constraints he must work within as set down by those in a higher position at WotC, this has no bearing on whether it is a good or bad game, or whether the developers are proud or not of their design... that's just how businesses are ran. The only way this wouldn't be true is if Mike both owned and developed D&D.