This mod replaces the inserter arrows/lines with something more functional and visually pleasing*!
The biggest change to the default look(other than the color options) Is the introduction of the amazing Bracket-Thing!(TM)
Inspired by the look of the inserters themseves, you can now easily tell from what direction is something being grabbed from! The direction of the Bracket-Thing corresponds to the (front? Which side counts as the front anyway?) legs of the inserters.
Check out my other mods!
-Mods that changes the icons of inserters to be more useful and pretty:
https://mods.factorio.com/mod/IondicatorsClassic
-Mod that shrinks the yellow 'no power' icon:
https://mods.factorio.com/mod/LessUnplugged
Also try my 'hotbar addition' mod, Placeables!
https://mods.factorio.com/mod/Placeables
NOTE FOR MULTIPLAYER USERS
You can install this mod by replacing the sprite files in the game directory itself instead of placing the zip file into the mod folder. Unzip the files and place the two sprite files in <Game Directory>/data/core/graphics/arrows.
This should allow you to play on servers without any issues.
*(Amounts of visual pleasure may vary.)