This is a good idea actually, but the video still isn't smooth enough for me. It seems only marginally faster than the best
I've seen under Moonshell2. And that it can't do h.264 or even mkv is an even bigger letdown IMO.
Its a good idea to put a powerful chip into the DS to get better features (Heh...an idea stolen right from the glory days of the SNES carts' add-in chips
) but unless these features are primarily geared toward gaming (i.e. getting better emulation support and more powerful homebrew running) its really only a gimmick.
If I wanted video in a small device I'd get a PMP (A Cowon A3 or O2, etc.). Cowons even support mkv files and subtitles (ACK!, but no h.264!) and have a Comic book reader of sorts (At least the O2 does).
I'd love to see a new flashcart (One that *does* play roms) with an even more powerful processor (If possible...how much extra juice does the DS's powersupply have to play with?) and more ram than what this one has though. As for my next gaming device, I'm just gaga over the Pandora. It has a ways to go, but it just blows everything else away so far in raw potential. It should even be able to do h.264 and flash without any problems.
I'm sticking with my DS Lite, Moonshell2 and my CyclosDS until then I think (If I don't splurge for a PMP first!).