I recently switched from Sketch because I couldn't change DPI settings (72 only) and it had no support for CMYK.
That being said they do a lot of things right. One thing that I immediately noticed and took for granted was that when I'm 'bumping' an object over with the arrow keys the highlighted outline of the selected object auto-hides and lets you get a good look at the work without anything getting in your way. Right now with Affinity I have to deselect the object, take a look at my adjustment and then re-select the object to adjust it again.
It would be smooth out the work-flow if you guys can add that option/feature.
I'm sorry I don't even know the correct terms. I tried to search to see if someone had suggested this feature so I apologize if I'm re-posting it