Hello hello - great mod, definitely feels like it should be in the base game.

One small issue - I use the mod Simple Adjustable Inserters, and when I use the keybinding to move where the inserter picks up items from (I have it set to "alt+scroll"), there is a "ghost" red line at its original pickup spot. To clear it, I have to deconstruct the inserter and construct it again. Hoping that can be fixed!

There's no event when an inserter changes pickup/drop position like this mod does, but I can add something that will try to update the indicators periodically around the selected entity, which should handle these weird cases.