UA: first part is nice, second is OP, third is... Fine, I suppose.
UU: well, I suppose it fits the theme of the civ, but... Is the last part even codeable?
UB: Isn't that Espozisyon basically a GW with half yields? And +20 influence is too weak(but synergetic, and fits the theme of the civ as well)?
I would suggest the UA giving musician points for working coastal tiles. I'll do some reading(or actually, school starts tomorrow, so maybe not...

)
I would love to help you with ideas, but as I mentioned above, I'm occupied with school stuff at the moment(and you obviously aren't

), so reading might take time. Didn't mean to sound harsh.