I dont really have any edges to put wear and tear on and I doubt anything that detailed is worth the extra space a separate specular map takes. I'm just looking for an even shine to make the parts look metallic.Metal material definition in TF2 is all about the specular map, with fairly dark large spaces and extremely bright, sharp edge highlights and wear.
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Does it need to be team-colored? Painting a tesla coil seems like a bad idea and using a special alloy with a blue/red hue specifically to match the coloring of the base is... unrealistic? You've got plenty of team coloring already in the scene.
I was thinking of making the actual conductive parts shiny chrome metal for the "realism" but it is TF2 after all, not like realism is that big of a deal. I am pretty fond of the team colored coils but I'll give that a go.