What can I say, the DC was in desperate need of something like this, to save it from the hypocrisy of "more accurate" dumps that only run on emulators. There's actually only a tiny handful of CDIs that aren't 100% complete. The only thing most GDIs bring to the table are a bunch of empty sectors. Still, 2 TB MyBooks are cheap, so, if they want to waste gigs of space on marginal improvements to 5 or so games, no skin off my back.
This resolves the main problem with the GDI format. The inability to test its accuracy. For an emulator-only format to become dominant is dangerous. I suppose it was hard to avoid with the Dreamcast using a custom disc format. But accuracy has a tendency to suffer when verification is not possible. The Dreamcast emulators that use GDI were at risk becoming their own platforms, just like Nesticle. This will ensure that the GDIs, the emulators that use them, and the translation patches for them, are accurate. Just like the N8 and Powerpak keep modern NES emulators and the iNES format true to real hardware, and cheap SNES carts like the Super Everdrive have finally led to bad translation patches like the one for "Ys IV - Mask Of The Sun" being corrected.
I didn't know they made something for the 3DO either. I'll have to check that one out as well.
Hopefully they'll do the PC Engine/Turbografx, PC-FX, Saturn, and Neo Geo CD eventually as well (as for Sega CD, the 10 or so titles worth playing aren't unmanageable, but if they make the device, I'll probably buy it just for the sake of completion).
For PSX, I'm currently using the PS3's PSX emulator via Multiman/Webman. You have to have folders for each letter (PSXISOA, PSXISOB, etc.), and rename so that it doesn't try to list all the games at once. Still, it's the best solution I could find for now. Much better than anything for the PS2. I will definitely go for the PS-IO when it's out though.
These ODDEs are coming at a good time for me -- my flash adapter collection's nearly complete (we're all still waiting on Harmony 2, and I'd pick up an Ultimate 5200 SD if I could find reasonably-priced 5200 controllers, but I'm using my XEGS to run most 5200 games already, courtesy of The!Cart and the SIO2SD I'm using to program it). My ultimate goal is to have every system where you can just turn it on, select any game ever made for it from a menu, and play it. No compromises, all 100% genuine hardware.
Consider my interest piqued. I will still bet on emulation in the mid to long term (even if the texture replacement people are not doing as much as the N64 and GC lot) but this could help a few things along.
That's a short-sighted bet if you ask me. Emulation is the Windows ME of retro-gaming. I wouldn't bet on it hanging around much longer, personally. Emulators were cool when I discovered them in 1996, but they just don't light my fire anymore. Super Road Blaster on a PC, yawn, cheap trick, PCs have relatively infinite resources compared to the SNES. Seeing it play on a real SNES, now, that was actually fun. Don't forget, for most people the priority is re-creating the original experience, not graphics hacks that won't even run on real hardware. Only "hard-core" PC gamers blindly sacrifice gameplay (not to mention their right to privacy) for graphics. Have a look at DICE, the only circuit-level-accurate emulator, and see how slow it is running even a game as simple as Pong. Emulation is at an impasse. FPGAs are the future. Only they can end the compromise, offering both circuit-level accuracy AND full speed. They can add extra resources to the reconstructed console too though. So, people who's thing is graphics hacks won't be left in the cold either. Not that I could recommend a device like the MiST at this time, because it's a bit too early in the game. Most of the cores still need a lot of work. That said, I may never play Pac-Man in MAME again (that's one damn good core).