In your 15/16 example, that's pretty straightforward to do if you know what you're doing. You just have to know how to do it. That's just a matter of knowing how to use the program. I know it backwards, forwards, sideways, and in retrograde inversion, so I guess that's a non-issue for me.
When I say consistency, all the notes will be the same shape, all the staves will be the same size, all the text will be the same font, all the spacing will be the same (if you let it) throughout the score. This is leaps and bounds above some handwritten scores which are much harder to read. There's a reason people generally don't give out handwritten parts anymore.