derp
I remember writing down how the XYZ things correspond to the compass directions, but I don't have the note... For now:
(with the basic spawnProjectile event on a brick; [] is each parameter, with {---} being a draggable meter)
[The velocity and, as determined by that, direction; XYZ][The variance or innaccuracy of the round; XYZ]{--The size and relative power.--}
Forgive me if the layout isn't great, but that's what I remember.
Also, typing with a Wii is hard. ;c