I wish they hadn't touched Meanwhile at all. I don't know exactly what they would have done instead but I didn't need or want the direct connection to one of the best episodes of the show. It felt as though it undermined that episode's conclusion somewhat.
I agree, but for different reasons. "Meanwhile" isn't one of my favorite episodes; mainly because I just don't think it's very funny. The second biggest problem I have with it is that I don't really understand the ending. Having the episode, and the series, end with Fry and Leela losing all of their memories is, frankly, terrible. It makes the episode meaningless, imo. I still think the episode is ok, simply because I enjoy spending time with these characters. Oh, and because I like the idea of the ten second time machine.
Which leads me to "The Impossible Stream." It doesn't answer my questions about "Meanwhile" and actually raises quite a few more. They don't answer any of those either. Do they remember the events of "Meanwhile"? Time seems to have passed normally for some characters, and not for others which makes no sense.
I think it would have been better to just leave most of the events of "Meanwhile" unmentioned. Just start the first episode with everything being like it usually is at Planet Express with the sole exception being that Fry and Leela are engaged.
As for the episode itself, I'd probably give it a 7/10. Not that many funny bits, but it still felt like Futurama. And, as I said, I just like spending time with these characters. Sometimes that's enough.