Asimov - "I was just thinking....now that the GBP is out couldn't developers add like more button functions or analog control or something?"
Cooolcorey - "Yep, it's possible. They can also do online GBA games or use the GBP as a substitue for a GCN-GBA link cable for linkage."
KnowsNothing - "errrm, didn't Nintendo say the GBP CANNOT substitute for a GCN-GBA link cable?"
Bloodworth - "Yeah, they did. There's no reason for it though. It works just fine."
TAYREL713 - "What do you mean it works fine Bloodworth? Do you know something we dont?"
Bloodworth - "I mean we've tried it and it works fine. We're guessing the "warning" should be taken just as lightly as the warning not to use rechargeable batteries in a Game Boy or Wave Bird."
I just noticed this and thought I should try and clarify it. I think Bloodworth mistook the question, or was answering something completely different.
The GBP currently can't substitute for a GCN-GBA link cable. You can't get GCN/GBA connectivity out of just a GameCube with the GBA Player. If you put Metroid Prime in your GCN, and Metroid Fusion in your GBA Player, the Fusion Suit in Prime won't unlock. Even if you do something weird like connect a GCN-GBA cable from one of the controller ports to the Player's game link port.
It's supposed to be completely possible that future games might include that feature, and others (by simply including the GBP's Boot Disk instructions inside a GameCube game). But it currently doesn't exist, so Nintendo says you can't do it.
What I think Bloodworth was commenting on was a line in the GBP instruction book that says you can't hook up two (or four) GBP-connected GameCubes to play multiplayer GBA games. It says you should only hook up one GameBoy Player, and then you can attach up to three regular GBA's.
That's not true though. If you have enough TV's and GameCubes, you can play all the big screen GBA multiplayer games that you want. I don't think anyone knows why Nintendo included that line.
Although I can understand Nintendo not endorsing rechargable batteries, because I've seen my GBA get picky, and refuse some of my cheaper third party GameBoy Color power packs (used through one of those third party GBA adaptors). Even though it's supposed to be all the same voltage, and they work on my GBC just fine.