Unlike Japan, Nintendo has not invaded the entire home consumer market here in the United States. This leads them to believe there is room for both the DS and the DSi here in the United States. The DS will no doubt be a cheaper alternative to the DSi and the DSi isn’t going to make its way to the US for some time now (well into 2009 we hear).
Right now we’re still working through what the strategy’s going to be here. But we think that there’s huge untapped potential for the DS Lite. Because when you’ve got only one in every five households in the U.S., compared to one in every two in Japan, it says there’s potential.
You’ve seen some of the work we’ve done this year with celebrities, that we’re bringing a lot of new consumers in to the DS. So I think there’s opportunity for both of them to coexist for some period of time. (kotaku)
We all though the DS was taking over the market, apparently it’s going a long way to go. Nintendo probably feels the DSi may take some of the market share for the original hand held so they’re going to keep them both in the market, initially. No doubt, the DSi will eventually out-live the DS over time, but there is no reason to take the DS out of the US market until the market dominance dies off.
I like using keyboards for racing games that have simplified acceleration, braking, reversing, and turning such as TrackMania (four keys for all), but fighters and etc. are difficult for me via keyboards.
Mice allow for more angular granularity than controllers because of the area of movement across the mousepad/surface when using an adequate sensitivity, and mice can be polled around 1KHz or more versus controllers being polled around 250Hz, as far as I know.
If mouse sensitivity is set too high above 800 CPI or so, noise becomes an issue (quantization occurs at too low of CPI), so I recommend mice equipped with the 3360/3366 sensor as the older mice with 30×30 or less pixel/photo-diode arrays might have more trouble with noise because correlation imaging sensors will always be imperfect.
Here’s a thread regarding mice with said sensors from a reputable forum:
http://www.overclock.net/t/1602282/lets-compile-all-3360-3366-and-their-release-dates-for-everyone/0_100
The reason of 800 CPI or so being the sweet spot for current mice is, each pixel on the tracking surface or “matrix” is approximately 30 microns in diameter because of the lens magnification and sensor height from the tracking surface, so 25.4mm to convert an inch / 0.030mm = roughly 846.666 of these pixels are able to fit in an inch on the tracking surface, and the aforementioned sensors should be the same.
Each pixel is divided to achieve a higher resolution, so noise becomes an inevitable issue making a larger photo-diode array more ideal.
http://www.pcgamer.com/gaming-mouse-myths-busted/#page-1