Well, I guess the question of whether there'd be a sequel or not is pretty much settled now. The story, however, is far from settled, with two major developments to address.
I like the bittersweet feel of this episode, despite the fact a happy ending is likely to follow. I'll admit to having a soft spot for bittersweet endings, but this is a case where I think a genuinely happy ending would satisfy me all the same - provided it's handled delicately.
More detailed thoughts here.