I'm also seeing the eye taking on a somewhat irregular shape at times. Occasionally, you will see little appendages hanging off off the eyewall that can be associated with strong mesovortices. In this case, though, the shape may just be a side effect of the remnants of the old inner eyewall which STILL seem to be somewhat evident on satellite images.

Wilma is still deepening, but seems to be struggling to wrap intense convection all the way around the center. If the eye ever clears out, the convection will probably become more symmetric.