I’ve found at least two plugins which offer out-of-the-box key rebinding menus. However, neither they seem to support rebinding axis controls, such as mouse movement or joysticks. Does anyone know of a plugin which provides a frontend for rebinding vector inputs?
vanilla enhanced input only gives you scalar key slots through the user settings, so WASD style keys rebind fine but mouse movement and stick vectors have no frontend to remap. that is why both plugins you tried stop at keys.
workaround if you stay stock: treat each axis component as its own mappable entry and do unmap player key plus map player key per slot, then save settings and apply. it works but you hand-roll conflict checks and profiles yourself.
i ended up using advanced input rebinding system from fab for a similar settings menu, it covers axis and vector rebinds with conflict prompts and profile saves so you dont build that layer by hand.