We need more specifics on the chip... you can't really start saying what kind of power the chip has until you get into the nitty gritty and also don't forget the CPU, that will play a big part and if the 3DS has a 200-400Mhz GPU a 1.6Ghz or even 2Ghz CPU is possible, and paired with such a powerful/effect loaded GPU we could see some amazing results in the future. And with the it being possibly familiar (depending on the architecture, which we also need to find out more about. That Pica200 could easily be Pica200x or some other designation made specifically for the 3DS) we could actually have more than 2 or 3 not only solid, but instaclassic launch games.
I don't know why I have this in my head I feel like I read something about it, but will there be some kind of achievement system?
No you are correct as a matter of fact! I don't recall if it is Nintendo based, but I remember hearing some 3rd partiy say they are doing achievement boards and give you free DLC stuff... Kind of makes me think of Animal Crossing, like if you find all the fish they give you a new shirt or something... maybe it is Nintendo based... now I have to look for it until I find the link... thanks for retriggering my OCD.