Adding tons of cool weapons to the game is somthing funcom does very well. Tho i have put my mind to a creative corner to suggest now.
Pistols (jk ofc)
Semi-Range specifc weapons
Whips as long slaves were whipped with (pls rpers no out of context)
Chains w blade or solid mace head or spike head on the edge (like a gladiator)
Off hand weapons
Vials (more options)
Melee (no weapon)
recipies found in world
New fighting styles hand to hand like in the old gta games.
To be specific here i like the armors they add in the game so this is practical over apperance
Legendaries with unique perks like,
Boots (movement speed slight increase) if 1 is standard then add .2 so it look like 1.2 or 3
Pants like lifeblood spear (since ani cancel i see this being valid as u always have ur weapon equipped)
Chest (unique perk again take my fantasy w a grain of salt) but w a perk once u dodge u heal but like lets say max health is 300 then it heals for 12.5
I would like to see alot of creative suggestions here as my examples are not the best but some for the table.