Why do you use the lose all money on arrest and death. Isn't that more annoying than more difficult? I think maybe the mod where you go to prison is better. It is a punishment, but not one where one would want to reload a save file. Plus, you get the option of escaping which is cool
Also, I am interested in mods which make the game harder or add gameplay features. For example, parkour (jumping mod), or kung fu (does not work for me) vehicle selection. I hope people post more recommendations.
Some other things
-try making the sprint function with weapon weight faster. I find doing so makes the game more fun. You are rewarded for good positioning, and the punishment is not too high for bad positioning (b/c you can just run out of there). It allows for more experimentation in battles. I think it becomes more dynamic.