Fully Dynamic Animated Blood Mod- The best addon for blood, with it the shootouts will become better and more epic, I recommend switching to beta. https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3000028704
Old Fedhoria- I think everyone knows this addon, but the old version works on this addon https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2844890183
Any slowmo mod- Shootouts are more epic in slowmo

Write in the comments which addons are also ideal for a shootout