Please make this for all weapons in the game at some point, and if time permits then all interactable/pick-ups in-game.

Ah yeah that's fair, the TLS update combined with your Reshaded Firearms mod already help bring those older models up to L4D2's standard

Personally, I don't think those weapons need an upgrading, save for the Autoshotgun I suppose

Sorry if this is a dumb suggestion, but what about a "Refined L4D1 Weapons" series for the Uzi, M16, Autoshotgun and Hunting Rifle?