I really, really, really want to use the Affinity suite for more stuff, but just the other day when I was trying to knock up a basic drawing of something that exists in real life (a bicycle frame) I found that Designer couldn't draw a line of X length at N angle. It just... didn't have the option.

All I wanted to do was draw a few lines of given lengths and angles and join their ends. Then overlay another set of the same in different colors so I could see how the two groupings compared visually.

But... I couldn't.

That's such a fundamental part of Illustrator that I guess I'll be going back to it.