While I do agree that the finale was rushed, I don't think that adding more seasons would fix it. The second season clearly suffered from some pacing issues, like the first three episodes feeling too slow and a bit like filler, and the last two going way too fast. I think they had enough time to wrap the story and character arcs up, but didn't use it well enough. But a story has got to end at some point. There's a reason that shows that keep getting more and more seasons are not as good. It's best to end it on a high note and let the amazing artists behind it move on to something new. It's a shame that the second season wasn't more or less perfect like the first, but we still got some damn good episodes out of it. Can't wait to see more stories from these creators.