Knowing about lazy nezumi pro, I compared Krita and the software and think a few things would help make drawing easier using rulers in Krita.
Some features I would request are the following :
Perspective ellipses rulers
See this article : https://lazynezumi.com/perspectiveEllipse
vanishing lines distance unit
See this article : https://lazynezumi.com/vanishingLines
In terms of workflow, things are clear about 1)(the article).
As for 2), we just need the unit distance to help us guess how to draw more accurate proportions in space, so these graphic guides help in the situation.
As for what’s more, having rulers with unit distance for most of the rulers is requested too.
The unit rulers are assumed abstract, just like with- Lazy Nezumi Pro.