Bug 418741

I didn't find where to suggest things so... I had to do it here.
There are many things to love about krita but it's often extremely annoying to deal with where it counts. the top problems that often halt my work and force me to go back to photoshop or sai are:
- Can't limit the drawing to the image boundaries, I'm sure there's some performance penalty for drawing outside of the image where I don't want or need.
- Layer thumbnails take forever to update, even on a small canvas, that can be a side effect of drawing outside the canvas to the infinity.
- Thumbnails show what's drawn outside of the canvas, even if I select the canvas area to not draw outside, the thumbnails still show where my brush have traveled.
- The thumbnails don't keep the correct aspect ratio and try to fit everything in a square, together with drawing outside of the canvas, often the thumbnails look like a squished mess with a whole lot of empty space around it.
- The distort brush doesn't have pressure slider, full pressure is often needed to stretch lines perfectly across some area, for example when I want to fit a frame to a different size.
- I gave up trying to get the individual HSB sliders under my color selection, tweaking one of those sliders alone is often used in pixel art, but even if there is such an option it is too hard to figure out.
- I love the wrap around mode, but I was a bit disappointed to see it doesn't have vertical and horizontal only mode for tile painting. it's still better than photoshop with no such option though.
- The filters are amazing but they often resize the canvas. it's very annoying.
- Some filters create amazing patterns to use as a base for game tiles but without seamless option, there's lots of fixing needed before they're usable.

I think Krita has the potential to become the main tool for 2D game artists, there's just few things missing, one of them is a clear way to send suggestions and getting involved in the development.