I can't say that I have
ever seen one on the ground in NA 1. That doesn't mean that it is never being used, but I am a nerd who plays too much and I scavenge 1H for dueling at the end of the round.
The crusader sword is really similar to the italian sword. +3 italian swords exist and are cheaper than hunting down a crusader sword or looming one yourself. In NA at least, the flavor of the month 1H weps seem to be scimitars, axes, and the ever-popular spathovaklion.
Stat-wise the crusader sword doesn't really need a buff... the current metagame (and much cheaper alternative in the italian) make it a rare sight. Thinking of looming one next, what with being a Crusader of Acre and all.