You know what, you’ve already posted a Tie Interceptor here - link, in the Spoiler.
I had always thought the design of the Tie Interceptor was beautiful, but lazy.
Lazy, because once you notice that square-shape cut-out of the wing (the negative space), it looks like crap.
So, what I suggest is this: Where that big, ugly, lazy square cut-out is on the inner portion of the wing, place something congruent, that blends with and complements the other features of the ship.
Since i first noticed this, now all i see is a hollow square.
Judge for yourself ...