In trying to fix the n-gons and tris on a mesh, I've run into a problem where I need to turn a set of vertices that forms a right angle into one that forms a curve.
You can see that most of my edge loops have a curve to them, except for the innermost loop (which has the pole I'm fixing at the corner of the right angle). All the vertices for each loop share the same z-coordinate. I'd like to just turn the selected points into a curve, then scale them so they follow the curve of the other edge loops and dissolve+recreate the edges to fix the topology. But I can't figure out how to do this.
I've drawn what I'm trying to do in blue (curve the vertices and re-do the edges). I'd be happy with a quarter circle of any radius as long as the vertices were properly distributed.