Adding in one or more SMG Model would be useful.

While I have Recommended that the Pistol either be Upgraded or Removed, perhaps the 9mm could instead be transferred over to an SMG Class. While Expensive early on, it would make dealing with Bosses more worthwhile, especially if Armor-piercing, Explosive, Soft-point, or some composite of them are used. Additionally, something like the STEN Gun would be a good Starting point, especially as they were designed to be able to be used with suppressors, which will help in some missions, preventing the alerting of other animals, or at least to prevent the Aggro of nearby Predators (usually Wolves) from being triggered (especially if you Miss your shot). Adding in Stealth Weapons for Higher Tiers would make them Particularly useful in Outposts as well, as being able to take out prey animals or singular predators without alerting others, including other animals that are needed for the current part of the Crafting Cycle. This will also be useful to Speed up Stockpkile Missions.