Tl;DR

Line Tool -> rectangle shape with stamp = ugly overlaps || pls fix

Long version:

Right now the line tool is very difficult to use for making any rooms with sharp or 90 degree angles because it breaks the seamlessness of the stroke brush, usually via an ugly overlap. It seems the simpler the stroke brush the more this is visible.

If the line tool could be improved to utilize systems like Dungeondraft's Walls or Paths where this overlay affect is almost removed via some clever math(or so it seems to me) allowing for smooth corners, I think it would improve the map making experience by leaps in Inkarnate.