I have been working on making a fairing to close in the space around the front wheels.
There is some masking tape along the edge of the fairing just so you have contrast between the black tire and the black carbon fairing. There is now about a 3-5 mm gap in front of the front wheels. This is a considerable improvement over before. The big plus for these is that you could have separate sets of fairings if you run skinny tire or fat ones and still be very aero. I am sure its a small improvement but they all count.