Changing the face of the stock cover is what I would reccomend. There are all sorts of inserts for the stock cover from Harley and other suppliers.
That's what I did. I happen to like the shape and look of the stock air cleaner, and I like the way it looks with the SE backing plate -- open in the back. You can look at my sig and guess what insert I'm using on the stock air cleaner.
Here's mine, forget what HD calls it. You can get different "medallions" for the round center hole cover. I need to get the HD #1 cover or something else to replace the "103" because it's a "107" now. You can get a matching horn cover that's about half the size of the air cleaner cover.
Thanks everyone, I might look for an insert! I should've mentioned I do have a SE backplate - I have an S&S big bore so I'd like one of theirs but they all seem to be for carbed bikes.