Hey! Just started using Sketchbook on my Surface, really impressed so far. There's only one or two features that would push it from a handy sketching tool when I'm on the go to a potential daily driver. The big one of these is that I want to be able to turn anti-aliasing off on the desktop version.
I'm primarily a comics artist and a lot of my work at the inking & colouring stage involves being at up to 200-300% zoom and making sure lines connect and gaps are closed at the pixel level. This is kind of difficult when the anti-aliasing kicks in as soon as I zoom in, and my view becomes all blurry. I know the option is there in other versions of Sketchbook, and I can see the zoomed-in pixel version when I move the canvas, so this doesn't sound like a difficult feature to add, but this small change would be a huge push towards me using Sketchbook more and recommending it more.