With the Wii U out, the PS4 about to be announced in a week and the next Xbox not far away the next generation of home consoles is upon us and I would just look back at what were the mistakes and accomplishes of each first party. Starting with Sony obviously launch was a big mess with a ridiculous price point, shortages and missing features but then stuff straightened out(price drops and better games) some stumbles here and there (dropping backwards compatibility the PSN hacking) but maintaining a consistent lineup of exclusives and innovation kept them in the competition even though marketing was not up to the task of promoting these games.
Microsoft in a very smart move launched first even though it had the red ring problem around it but with a redesign they changed that, another accomplishment was the transformation of Xbox live into a legit entertainment hub something Sony couldn't really compete with the PSN. A big mistake(IMO) was abandoning interest in releasing exclusives and just depending on the pillars of GoW, Halo, Fable and Forza but an accomplishment was investing more in innovative XBLA titles.
Nintendo really didn't have many mistakes outside of the gimmick getting old, they played their cards right betting on a casual market that the other 2 couldn't have anticipated but it also alienated some third parties.
Mistakes on both Sony and Microsoft would be trying to get in the casual market with Move and Kinect and not including HDMI cables.
What did you think were the mistakes and accomplishments by the big 3?