Now that I've calmed down and thought about it some more. It wasn't that bad. Putting myself in Ellie's and Abby's shoes, I can understand the ending. Not everything has to be some super dramatic cliff hanger or big set piece. Like I said, playing through the game was a cool experience and I enjoyed the game overall. It was still a decent game, but nothing compared to the first one. It was impossible to follow up, even for Naughty Gawds.
I still don't know where the story goes from here if they make another one