Wow! you'll all get more details as the trip reports are finished but here are the quick answers to your questions.
1: The Pop Century is an AWESOME resort. In my opinion the best of the value resorts and I even think the rooms were a bit bigger than when I stayed at the All Star Sports but that might have been my imagination. Both Sara and I were impressed and want to do a longer stay there sometime.
2: The Poly was Beautiful! We loved this resort too (Of course there really aren't any that we didn't like

) We got a second floor room on the north end of Tokaleau. It was billed as a standard view but we could see Space Mountian, Splash Mountian, Big Thunder Mountian, the lake and if we looked through the leaves on the palm tree or under it, Cinderella's Castle!
3: I would do any of the above options for another vacation! We are looking at doing a 7 day cruise next but may do a day or two at WDW first or last, depends on money and vacation time. Sara and I love Disney which you can probably see from my signature, we have gone every year since 1999. If you are a first timer on WDW or
DCL I would probably reccomend a Land/Sea package or a longer (7 days about) just land. As veterans we know long ahead of time what we want to do and what we can miss.