In terms of voices, I've found a pack of Wario lines from Mario 64 and am already using some for the GO sound ("Here I go"), the pass section ("Wa ha ha"), the fail section ("Waaaaah"), and applause ("I'm-a gonna win"). I might try and rip some other voice samples from the Game Boy games. However, I do need some help. No matter how much I raise the volume of the samples, they're still very quiet when I use the skin in gameplay. Also, if someone thinks they can do a good Wario impression, lines for the countdown would be great.
And regarding the cursortrail, how do I remove it? I can't find a sprite or skin setting that turns it on and off.