Don't change anything. I've been using it out doors for a while, and it is perfect. I was skeptical of the swept point at first, but I'm now converted.
The choil is perfect for me. Filework would be uneccessary for something so small. It would add expense, is potentially uncomfortable, and will be one more detail I have to clean. The handle is an absolute joy. I'm indifferent to the lanyard hole.
Bill Moran really knows ergonomics! I would like a slightly longer blade, but I'll defer to Mr. Moran's judgement.