For me the two handed swords are too short and small, to fix it and ad some game play create a smithing tool that works in game in the smithing screen make it possible to increase the length and width of parts even further and also you can unlock parts buy spending money ,by increasing the size you need more strength ,so as you ad parts and change the sizes it should constantly show you the strength that you will need to weald it that way you never make a sword too big that you cant use after wards.