This one I think one is pretty simple, im not bad at the game or a noob or anything but sometimes even I get gibed by arrivals (mostly when I forget im not sec and dont have externals access and get FUCKING STUCK). Parameds basically never come in time, even if you radio to warn. Arrivals is where new players are most likely to end up and being slow is something new players do a LOT. Its just incredibly punishing for something that is easy ish to avoid, sure, but also misleading. The doors lock before the timer hits zero, a thing I constantly forget and isn't very intuitive. Maybe make the doors like cargo bay doors where anyone can open them. Also gibing and round removing is rarely fun or worth it, in general I think RRing should be left only to the most extreme of circumstances and this situation is like the lowest bar, one dumb mistake and suddenly I cant play anymore.
(You might wonder why an experienced player bothers to get on the arrivals shuttle after having already arrived but like sometimes I need a crowbar or an epen or something and cool tip, if you are an antag you can throw whatever the fuck into the shuttle lockers, especially the wall lockers, and it will basically never get found.)

