So, maybe some people would like to do 1v1s, team battles, or things like that in Tarkov. Perhaps there can be bets placed on who would or wouldn't win a certain arena battle. These bets can be placed by the ones apart of the battles or those who spectate. Think of it like "If I win this 1v1 in a Best of 5, then I can get your RSASS!" "You're on, I want your DVL-10 if I win!". Instead of guns, you could also bet money or barter items. The stigma of eSports might rub the wrong way for these ideas I'm bringing up but allow me to explain myself. Another question you might be asking is "How can we portray this without breaking the immersion in Tarkov?" I have an answer.
Simunition! It doesn't affect the health of any person involved in a Simunition exercise but you use real guns with relatively harmless ammunition. Now if you do any research on Simunition, you will soon realize that they're virtually recoil free, they cannot do any damage to real armor, and you need certain equipment to make it work (like face masks, protective equipment made only for it), and other things I might have forgotten that you can bring up. Let's start a discussion with that!
Now, I think that it would be a great idea to maybe have Simunition simulate the real game in every way possible with armor value, recoil, and other things that affect gameplay. Also to make it seem a little more realistic, the players fighting in the arena wear different face protection. However for immersion, maybe leave out things like starvation, thirst, or blood. Perhaps add existing parts of maps that players agree on fighting in or new ones made just for the arena that vary. This variation could either be equal in who can win or make them confusing to add cognitive intelligence to a battle instead of just simply shooting your enemy.
This could play a big part in the Safehouses too. Rather than simply having a Shoothouse where it's just target practice, use Simunition if you ever wanna do training with your friends/unit with no risk involved; it would merely be training to give people experience. That's a little something called "Force on Force Training" so you can shoot REAL people. Give people the same options in how they design their training courses like a sandbox? That's pretty dang complex I know.. but it's just an idea I had. Maybe with more money, you make bigger training areas for your Safehouse! That's the purpose of Simunition in the real world and I think it would have a good place in Tarkov. If you have any ideas, questions, or comments, feel free to leave them down below.