or revert him back to the dino noises that he used to make such as pre-Mario Kart 64 :).
I really don't like it when people say that those odd sounds Yoshi made before Yoshi's Story were his VOICE.
That sound Yoshi made (I'd rather not spell it out,) whenever Mario jumped on him was the sound his saddle made as Mario sat on it. Though not really canon, this also happened in the Super Mario World cartoons a lot. Yoshi had an actual voice in the cartoon, and that odd sound was made every time someone jumped on his saddle.
Why Nintendo decided to make this his "voice" later on is beyond me, and it always irritated me to hear that plus other odd noises coming from him in Mario Kart, Golf 64, and the first three Party games (Though those were made by Hudson, not Nintendo). I quite liked it when they gave him an actual voice in Yoshi's Story, and kept it over in the Gamecube era, and I'm assuming it'll be in Brawl as well.