A lot of things have improved in Tarkov development wise that has made the game more fun to play but if there's one thing that I would point at and say it made the biggest difference so far it would be BattlEye.
Ever since BattlEye got involved the game is a million times more fun to play and the difference it made was tremendous and immediately noticable. For the people who are new here; it was BAD. Like really fucking BAD.
Do you guys remember how often you'd get 1 tap killed out of fucking nowhere? So so many deaths were dodgy pre-Battleye. You'd see speedhackers on a daily basis sometimes. A full squad of buddies getting headshot within a second would also be a common thing that you just couldnt say for sure was not legit but it sure as hell was dodgy. And dont get me started on Labs. Labs was completely unplayable for a while due to the sheer amount of douchebags using some sort of aim assist or the ability to see through walls.
This stuff barely ever happens anymore. Sure there are still people who will use 3rd party software for an advantage. They will always exist popular FPS-games such as Tarkov but damn did BattlEye make a huge difference. The bi-weekly screenshots of forums filled with tears and anger put a smile on my face. It really revived my will to play the game as I had basically given up on it before BattlEye got involved.
Thank you BattlEye and thank you BSG for listening to your community who begged you to implement BattlEye.
Source: https://www.reddit.com/r/EscapefromTarkov/comments/eyzgtb/ac_appreciation_thread/