If the discussion at the end is stronger why bother having the other discussions then? Even if we were to discuss smaller details you run the risk of discussing the details out of context without the completion of the entire series. The other thing is especially from that poll there are only four or five people that voted, and it is unsure whether those people will even discuss at all. I don't think this needs to be that complex of an endeavor when we only have a very small group of people watching, and probably less discussing to that depth.
Does every detail need to be in full context? That seems silly since it implies that you can't judge a show until you finish the whole thing, and you can't talk about what happened until you see what's going to happen. Just because the discussion at the end is stronger doesn't mean the others are meaningless. If I'm watching a show with someone each week, I'll frequently talk about every single episode with them, not just bottle the whole thing up till the end. And I'm not saying it needs to be complex. A discussion thread once a week is probably less complex for the participants than trying to discuss everything about a show after a month with no reminders or pacing. If there were two of us I would still say lumping everything into one thread weeks later is a bad idea.