I personally think for the armor letting you add emblems and small things to each type of armor would be a good way to personalize armor and that would make it realistic and still cool.
As for the weapons that would be a little harder only thing i can think of for console players is add things like being able to shape blades give like 10 different shapes to choose from then add cresents only idea i can think of let's see what you guys have in your heads



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