Not trying to say "it's there so it's good", I agree there are problems with it and the fact that parts of the game require it. But you started off your comment attacking the OP here for having trouble playing as antagonist thanks to technical/network problems, because you seem to hate people who play antag. There were a lot of statements about the players who DO play antagonist, calling them trolls and bullies just for playing the game as intended and trying to collect stigmas which are needed for various things.
You are putting yourself down just for playing the game as intended for the very simple purpose of making some new gear for yourself, which will only take about 2 wins within 1 week to get high enough to make anything in the game. The only thing that needs to be hardcore played for is the Uras Beherit lore, which I do agree is a travesty to be locked behind getting RANK 18 FOR SOME LORE. I just did it, and beat a lot of noobs to get there, but now I can rest easy assuming they won't lock anything else behind MAX RANK of a leaderboard...
The issue with locking antagonist out of Hangin By a Thread: there would then be less chance of finding a game and longer wait times. I routinely have 15-20 minutes between antagonist matches as it is. Also, if that mission is locked from antags, those exact players you want to defend, the f2p noobs who want to experience the game, will then not be able to experience playing as an antagonist.
Before the Mission Of The Week, this was the ONLY way to even play Lycus, since he can't be used in the prologue (and was one of my complaints when I first started the game).
Players really should be forced to play solo mode before being allowed to enter co-op, I believe that is a large source of player inadequacy and learning difficulty here. Players do really dumb things that they should have figured out solo before teaming up. With a team there's more enemies to deal with and other players doing objectives, so you won't learn them. How often does someone get left behind after rescuing Lycus? Even though there's a big red timer and an exclamation point and Cortez yelling at you to move, and players spamming emotes to "come here"? Like 90% of the time, at least!
Kinda off topic, but we can't baby everyone in a game that is designed to be pvevp. To be perfectly blunt, If they have a bad time for losing and still getting rewards, then this just isn't the game for them. I'd consider myself a decently good player and I still lose my fair share of games. Losing will happen, and players have to deal with it. Getting crushed by an antag doesn't seem like any more of a bad time than losing to some overpowered AI bots kicking you to death. I actually feel more cheated when I lose to AI, because it feels like artificially inflated difficulty when they just read all your moves and swarm the map with endless hordes of perfect aim bullet sponges toting insta-kill guns and boots that kick with the force of a nuclear bomb. But maybe that's just me, I don't know, some people may enjoy getting stomped to death repeatedly and getting lower rewards when losing without an antag.
Additionally, a lot of missions are now easier with an antagonist due to less spawns and dumbed down AI. As long as your antag isn't that good, they can make the mission easier to deal with.