Rito, I have a suggestion!
I was just watching a video on how CeeCee was supposed to be an engineer with the concept of braum... I was wondering how a champion could work as an engineer, and... Sadly I couldn't think of anything purely novel, but if you want to use this concept as inspiration for a new champ, I would be honored. Anyway, here goes nothing!
CeeCee Passive : Generates resources based on what type of creature she is attacking. Tech : Generated by leveling up. Wood : Generated by killing jungle camps (Generated from killing small monsters as well). Steel : Generated by last hitting minions. Q: 3 Steel, Sets up a turret, (Max, 1/2/3) Attacks enemies, can control auto attack. W: 3 Wood: Sets up a wall, has a health capacity, so it can be destroyed. Skillshots hit the wall and weaken it, can be dashed through. (Width gets upgraded as levels into it increase) E. Harvester 3 Wood, 3 Steel, 1 Tech : Passively generates resources randomly, place next to turret, more steel, next to jungle, more wood. Have to walk to the Harvester to pick up the materials. R. Pull out workbench to augment an existing piece of equipment with Tech (1 Tech). Ulted Q: Turret gains legs, can be told to patrol an area. Ulted W: Wall can no longer be dashed through, creates an electrical field around it that slows enemies. Ulted E: Harvester Generates Tech. Very Slowly.