Hi. New Checkvist user. Still in the tire-kicking phase. There is a lot to like about Checkvist!
I had the same thought about left and right space. Looking at my screen, easily half is unused. My first little test list only has about 120 items in it, but much of the information is off the screen, and yet there’s so much white space.
So hopefully you’re still thinking about useful ways to use it.
Me, I want the screen to be information-dense. I want to be sitting in my information like a spider, able to instantly follow any thread.
I am enjoying taking a look at your product, you’ve got a lot to be proud of!