I don't really get what you mean.

Firstly, what was wrong with the scene with Goofy and Donald? And I guess you mean the one where they arrive searching for Sora? Or what?

And also, it made sense for you to see Mickey because he was the whole point of Donald and Goofy going on this quest, to FIND him.

So yeah. If we're talking about in terms of the story I didn't really feel let down by any of it. I liked how Donald and Goofy joined up with Sora to search for Mickey, Riku and Kairi. That was the whole point after all, and I liked how the characters interacted and became friends after an unsure start. ^_^ Especially Sora and Donald, heh.