Ok, I might as well go first: I wish I could draw. Not at the level where I could make photorealistic portraits, but I’ve always been envious of those who are able to scetch something together in a few minutes that perfectly captures what they want to convey. Sometimes words aren’t enough to express what I want to say, and for those situations I would love to have a simple drawing do the talking for me.
Dude, piano is so simple compared to guitar in a theory sense. The notes are all in a row. If you learn the fretboard on guitar first, it transfers so easily.