The "not too late to talk it out" bit was actually pretty good. It was a good theme they could've built to a little better, instead of the nonsensical plot that we got.
It's honestly hard to care whether or not they save the world or not. I'm guessing Gabi and Falco were meant to get us to sympathize with the outside world, but I just don't give a hoot about any of them. They could all live or die, and I wouldn't particularly care either way.
The only characters I remotely care about at this point are Armin, Mikasa, Jean, Hanjie, and Levi. Everyone else is dead or just kinda suck.