Yesterday I posted a screenshot showcasing how to open both vents on Cache, my friends have dubbed it the "Shef" Nade. Because they decoy has such a delay on popping it is possible to throw it to break both vents from the path to squeaky, thanks to CS2 not having sky boxes. Hopefully it can redefine how you and your friends play cache like it has for us. Old throw was patched, showcasing the new lineup here, with a video.
I was messing around with cache looking for lineups. I realized that it is possible to create permanent pressure on b using a decoy grenade to open up both vents. T's can do this every single round with minimal effort because of the lack of sky boxes. Simply back against the wall and the use corner of boost with your center line and your -1 at the top to find your position, you should be at the corner that turns towards t spawn.
Me and my friends have dubbed it the "Shef Nade". It can not be done with a frag or molly because it blows up too soon. This opens both vents, forcing CT's to always cover it for $50 a round, and has drastically changed how we approach the map. Ofc it does give counterplay to ct's looking to boost into vent but we have found it to help us way more than hurt. Hopefully you guys find it as interesting, and can implement it into your game. Maybe someone already posted this and I just did not see it, but I have not seen anyone else do it or any videos on it yet.