Champion Idea: Valstad, The Magical Mechanic

I have an idea for a champion which I have named Valstad, The Magical Mechanic. Valstad would be a support who specializes in buffing allied structures as well as temporarily disabling enemy structures. I haven't ironed out his lore, outside of his possible relation to Viktor, but I have an idea on what his kit would consist of.

Passive: Inspection- Valstad "inspects" an enemy structure, which disables it for a short duration(1-2 seconds) The length of this disable is lengthed as Valstad improves his mechanical knowledge(after leveling his ultimate).

Q: Overdrive- Valstad increases the attack speed and attack damage of an allied structure for a short duration.

W: Mechanical Malfunction- Valstad heals an allied structure.

E: Reprogramming- Valstad channels his Reprogramming ability, and once it ends, an allied structure gains range for a short duration, and targets enemy champions instead of minions during the buff.

R: Craft of Masterpiece- Valstad perfects his mechanical abilities, and is able to summon a short range turret on the map that may be buffed by his other abilities during its life span. This turret would act similar to an outer turret with reduced health. Leveling this ability would increase the duration and health of this turret.

Overall, I see Valstad as a champion used mainly in the support role, as he would help a team push for objectives, as well as punish enemy champions for overextending into allied turret range. I think Valstad would be versatile, and there are currently no champions that occupy the role of effecting turrets.

I welcome any suggestions on how I can improve the idea for Valstad.

Thanks, Voyuma