Honestly I'm glad sony very glad sony is going in this direction, it's looking much better at providing the online experience it wanted to create with ps3, or any previous sony effort.
Yet I'm left jarred too, this has very few "new" ways to add to the way we play games, at least ones that can't be done on other platforms, other than sharing video replays, and remote playing someone else's game.
In place the focus was on expanding the graphics "potential" of games, and offset the struggle of developers who are trying to achieve those graphics.
of the few gameplay focused trailers Kill Zone looked fantastic, it looked like a native 1080P version of previous kill zone 2&3 games, with smother graphics, and more detailed distances.
Yet it's something that could run last gen, this focus on power and expanded online capability is a great start but, i think the costs are going to be high initially.
Its exactly what i expected from sony a big phony presentation about expanding the way we play, an illusion if you will, using lots of tech demo realtime CG magic, to make us feel the magic, honestly this felt like the ps3 reveal to me, sony saying the ps4 is everything we imagined with the ps3, but now we have RAM and a faster network.
I know I will eventually get one anyways, i always buy sony consoles about 2 years after release, as third party devs figure out how to make real new experiences on it(there will be awesome gameplay+graphics). Also I'm sure Kojima's Ground Zeros just got pushed into the next gen.