I don't think the Menavlion needs to be able to swing. It's essentially (correct me if I'm wrong), a long polearm? But it's mainly used in BL as an extra long greatsword with more damage, including from horseback.
Make it stop and overhead swing only, like the Pike from Warband, and its place will be a lot more balanced while still being unique.
Make it stop and overhead swing only, like the Pike from Warband, and its place will be a lot more balanced while still being unique.