You'd like the...roughly 85% finished custom weapon rules I've written up.
They were designed to work with 4e rules, but should be compatible with 5.0 and 5.5e as well*, and they include Simple, Martial, and Superior weapons (including double weapons). The greatest difficulties with the system were that some weapons were just massively underpowered relative to others of their same category, which made it a lot harder to see the underlying pattern. Simple weapons and double weapons had the most outlier cases. Martial and Superior were, by comparison, almost perfectly uniform once I had worked out some early issues. The only remaining thing was the rather late realization that some properties would be free as a rider on top of some other valuable property.
I was pretty pleased with the end result, I just want to add like two or three more interesting properties (in part inspired by BG3!) before I "publish" so to speak.
*As always, testing, testing, testing. You must test to see if it will truly work out or not. It almost certainly wouldn't be a problem in 4e, but in 5e (and particularly 5.5e with its new weapon masteries and such) I cannot guarantee that there isn't some weird charop nightmare that becomes stupid if this is permitted...but I find it somewhat unlikely.