I see great potential in this game and have thought of some ideas that I think would be really cool and practical to implement.
-Shields of different kinds
-Armor of different kinds ie. Heavy armor that'll take a good many swings to chop through but the user is slowed down....have gaps in the armor that can be targeted. You could even have it so that you get to select different armor for each body part...someone could make it so they have one side extremely armored and one not. Have armor weight values that'll determine speed.
-Weapons such as handheld axes, daggers, etc...two handed weapons such as axes, hammers, etc. Personally if I could be a heavy armored fella and swing my great axe and watch enemies be swept aside, I'd probably play this for countless hours.
-Make it so that weapons do not always have the ability to follow through on a swing...like a sword hitting the heavy armor I spoke up taking a chip out but bouncing back. Also make it so that bigger weapons have the ability to knock an enemy down even if it doesn't kill them.
-Incorporate a stabbing mechanic
-Companions that could also be personalized
-Fighting styles...a power style with slower attacks but bigger impact, swift style with fast attacks but less impact, standard with balanced attack impacts and speeds.
Comment if you got any other ideas