As far as I know, there's no longer a reason to have a USB device to be formated as "WBFS" to use for the Wii, and Fat32 is the far, far better choice. And even the, a WBFS formated device wouldn't work with GameCube games, which require a Fat32 format with 32kb cluster for optimal results.
By the way, just to make things clear, and because I think is good to point this out for you, zubz19:
A WBFS formatted device is one thing, and a Wii game with the format WBFS is another.
A WBFS formatted device should be avoided because Fat32 is better it all scenarios usually.
A game with WBFS format is a Wii game (only Wii) that had its "garbage" data removed, and it takes less space than the usual 4.7GB that a DVD has.
If it was a good dump of a game (dump = resulting file of copying a game); a WBFS file is perfectly fine and even better than usual ISO because it takes less space which means more games in a device. Oh, and GC games can also have their garbage data taken out, but with a different tool and being a bit more careful, as some games don't run well on Nintendont if they're trimmed.
Wii U locking drives for itself was a pretty disappointing discovery to me back in the day, specially being so simple and convenient with the older and "not-designed-for-it" Wii.
right..so this seems to be a disadvantage of a wii
, so is it somewhat similar in the wiiU? does anyone know if something like this (requires a real memorycard) is also required on the wiiU for the GC games? are all GC games playable on wiiU without need of some external mem, or such
How could it be a disadvantage of the Wii to be able to use real Memory Cards? That's only a plus, and a pretty big one seeing how there are games you can't save with virtual Memory Cards on Nintendont, and being able to swap memory cards while gaming can have its uses too.
I've personally never used Virtual saving on Nintendont, I've always preferred to use my cards, in fact the only use I gave to that option is saving on a couple of japanese games (because they're incompatible with memory cards formatted for US/EUR games).
While I don't think many people will do it nowadays, I still play GC games with other people, and just needing my card and game to play on someone else's house it's a fair bit more convenient than having to bring the entire system there (useful for games with unlockable stuff). And if your SD/USB device gets corrupted for whatever terrible occurrence, your GC saves would be safe in real cards.
And you can manage the real Memory Cards with a homebrew application named GCMM, which is fantastic and really useful. Even more, a real Memory Card formatted by GCMM will work with Nintendont perfectly and accept save files from both NTSC-US and PAL games. All in all, it just gives you more options and possibilities. It's not a downside at all, it's all benefits.
Specially compared to Wii U, which only has virtual saves. Being realistic, you get the "GameCube bare minimum" stuff with the Wii U.
Besides, Memory Cards for the GC today aren't expensive, and even generic ones work wonders, I have two 128Mb (16 real Megabytes) and that's more space than I will ever need for GC games, even if I had all my saves repeated twice.
EDIT: Oh, and if you're a sucker for old video game "save icons" and such as me, you can even load up a GC BIOS in Nintendont and see your Memory Card saves' files on the Wii as if you were using a GameCube. Pretty charming, even if it's not particularly useful.