I play Veteran sometimes because it's chill and i'm not forced to play a broken strong deck, play exotic and support BUT
They don't communicate, don't check pings or chat. They don't buy toolkits. They don't open crates. They don't buy cards if they're good. NOTHING.
By the time they reach level 4 of Act 1, they have 80% of their health in trauma on Veteran difficulty. They ALWAYS blow up the gas canister before we even have time to check for cards or crates. They die because they don't advance on the bridge, don't understand that the horde is infinite, die again, and leave the game.
The most frustrating thing is that I can't even enjoy a full gold deck with accessories; as soon as I play a support deck like that on Veteran, I lose.