Proposal
From what I understand, the main problem with fighting styles is having to get in, and the only way to stay away is canon fist, so a peg leg fighting style I believe could be good
Details/background on your proposal
Peg Leg fighting style could have more range that the average fighting style because you have a peg leg which would extend when you kick, and would also be a cosmetic thing like boxing and the gloves. It would be a little slower than basic combat because the peg is probably heavier than you own leg and you attack with the peg nothing else so if its just one peg it will likely be slower. it could later give the bludgeoning effect.
Reason to add
Right now fighting styles only have canon fist and thrash for range. Peg Leg will have more range so its viable closer to enemies while still having enough range to be a safer option. now it doesn’t fully fix the problems because skills are mostly the same BUT that little range could help save you.