I don't see why low tier crossbows (hunting, light and normal xbow) should have such high difficulties, they were used for two reasons anyway:
1) for fun builds where you hit and run with a low tier xbow, extremely funny but I don't see why this deserved a nerf.
2) to have something to do during your first hours after retirement.
Thoughts? Maybe the normal xbow is fine with it's 12 difficulty, but the light xbow with 11 is quite stupid imo :/
EDIT: maybe some people might give HX as a reason, but I believe a balanced build is far better for horse ranged than a troll build.