I'm not sure what your long term plans are for the car, but aside from the good points Seedy brought up I think it could also potentially lower the resale value of the car. At the very least it would make it a bit more difficult to sell as you'd have to find a buyer that shares the same taste in exterior mods.
I agree that new wheels would be a good choice - if you get tired of them you can always sell them and try something different.