Blue
Ravenous Bugblatter Beast of Traal
Can't speak for anyone else, but I do this as it is, but I do prefer a decent amount of mechanical differentiation.
For me, and most of my players, customized mechanical differentiation enhances roleplaying to a noticeable, and very enjoyable, degree. There is a point of simplicity where we begin to feel that the rules do more to hamper us than to help us, and 5e weapons are just complex enough for us, most of the time.
Help me understand. Do you want more differentiation (and hence more complexity) or are you at the right level of complexity/more simplification (hence no more differentiation). I'm probably misreading but getting both from your post.