I don't recommend power coating or chrome type plating on any part that may be subject to cracking AND the resulting failure will result in loss of control of the car. Suspension parts, highly stressed drive line parts, engine/grbx mount, steering system pieces, and wing mounts, etc.
These kind of parts need to be inspected from time to time for stress cracking. More often for track cars, somewhat less so for road cars. But inspections for loose hardware, evidence of cracking and bending should not be overlooked.
So why not power coat? You can't see cracks forming under it until they become huge and often only after complete failure. Most professional racing sanctioning bodied either don't allow it on these pieces or recommend against it.
Anodizing would be OK in my opinion BECAUSE it so thin and will propagate the forming crack almost immediately. I think Neil's nickel plating can also be put on very thin but I am not familiar with it in this application however the thickness of the plating is important and should be considered. Don't put on anymore than would prevent corrosion.
My advice is a light coat of anti rust/paint, matt silver or light grey will show cracks very well, and leave it at that. Even several coat of paint can cover a forming crack.
That's my 2c's worth.