Doctor4t, you are SERIOUSLY missing out. You NEED to add a weapon or item called the Ratarang. It's just honestly too good to pass up on. Maybe even a Ratmobile, just some Batman puns would be nice. This might be how it works: it has to made by using clothed ingots and making a boomerang shape, then putting in a Rat as an item. The basic functionality is that when you throw it (it deals 2 base hearts), all of your rats magically teleport to the target. Better yet, the more rats you have, the more base damage it does. For example, if you have 4 rats, it becomes 4 base hearts (every rat adds .5 hearts taken away). Deeper functionality would be that if you use the Rat Master control or whatever it's called and combine them in a Smithing table, you can control the Ratarang. It would also increase the damage by 1 heart and teleport you to the target with the Rat effect. Maybe even you could even transfer effects if you craft it with a plague rat? This might be busted, but I see it as a good way to have fun.

Also the Ratrmobile could be a rat with a gun flying a bomber that bombs rats.