Throwing brand new players into expeditions with no explanation of what to do or why isn’t a good experience for them, and most of the time it’s not great for those actually playing it.
I’d propose they get put into a special map with one puzzle the bunker and an extract. Have it teach them what they need to do.
Can’t tell you How many times someone has trigger the extract unexpectedly.
So I recently ground out the penances for expeditions and I agree.
It felt bad because the majority of the time it was level 15-25 players who just didn’t understand what was going on.. I did my best to help guide them but for a game mode being promoted it is extremely different from the base game and very unintuitive.
It felt bad that I was the tutorial for a lot of players.
I’ll admit to mainly being annoyed because it didn’t give me a chance to spend my salvage as I am chasing the Salvage Lord penance.
The swapped board has a new condition of extract only being available on the final section. Too bad it has a timer, you’d be able to brick the game intentionally and just kill until you die if you did the gate call and then abandoned it first sector 
I literally just come here to kill packmasters and scab captains/dreg chumps when I get bored.