As a Roblox developer, it is currently too hard to make a slanted gradient across a long frame using UIGradient.
You can see here that under all except specific rotations, the gradient does not go across the entire frame. The solid black and white are areas outside the boundaries of the gradient which can only be defined from 0 to 1.
If Roblox is able to address this issue, it would allow me to use the Rotation property of UIGradients.