As a developer who designs UI often, I find it annoying that I don’t have more control over the border of a UI element. I don’t see this being something that would be hard to add. I would love to have control over the border transparency. Right now, if you adjust the Frame transparency, it makes both the fill and border transparent. So I can’t do things like:
Fill 0.75 transparency
Border 0 transparency (solid)
or
Fill ‘1’ transparency
Border 0 Transparency (solid)
Because of this, I have to then make the border in Photoshop, upload it as a decal and then make sure I set the proper thickness on the outline in the image. It’s pretty frustrating to deal with.
This would help improve the workflow of designing UI because I wouldn’t have to go into PS to make outlines for my UI elements, plus I would have control over the border thickness keeping consistency.