I am loving the new tools and I use Inkarnate a lot. One thing that consistently trips me up however, is converting drawn maps into Inkarnate.

The problem I am having is that the stamp from the shape/line tool will take up grid space of the room it creates making a 3x3 more like 2.5x2.5. What I am suggesting is add a setting to set the line of the shape/line tool to be only the inner outer edge of the stamp you select.

So when you create a 3x3 grid, the stamp is only allowed to border the 3x3 instead of bleed into it. This is achievable with some work but honestly if I'm having to do extra work that takes away from the shape tool's handiness.