^ CLAMP said that they were ending both this and Tsubasa this year.
Oh, Yuuko. I agree with Avarice, there was an incredible ominous feeling towards the latter part. I assume Yuuko's words of asking Watanuki 'did he like it here', and 'would he like to stay here' were definitley foreshadowing. Goodness, there's a lot of that lately here, actually. We get near nothing for the duration of the series, and now as it's coming to a close, we're bombarded with information. Although it's rather cryptic.
I'm still thinking that after Yuuko leaves, Watanuki will take over the shop, and have a purpose at last. But since the shop will survive until that day, I'm not too sure anymore.