From an SSR point of view, you won't have an issue, but primary is where it begins to have issues. It will appear as a primary contact which under DS rules, need to take 5 miles laterally. Having small collective groups of windfarms will appear as large contacts, smaller ones may look as clutter. With more turning up over the country, it will be more strain on ATCO's and Aircrew to get them to avoid (or achieve best effort) on these contacts.
As for VMC conditions, yes they're probably a good tool for navigation, but I'd think the negatives would begin to out weight the positives in terms of Air Traffic
D.