I saw a lot of people asking for this feature in the comments. I myself went looking for this mod specifically for the purpose of snapping my initial roads parallel to the plot borders. The "Tile Clamped" feature would be perfect for this if I could snap the roads to the grid provided by your mod.

To anyone other than the author reading this with coding knowledge, I'm sure a pull request on the mod's github page would likely be appreciated by both the author and us users. :)