I somewhat agree with OP. My favorite resorts as far as theming are AKL, Poly, and WL. At the deluxe level, I also like GF better than BC for theming, even with the stuffiness factor (disclaimer: I've never stayed at GF, only visited). Could probably also add OKW to that list.
At the moderate level, I like the theming of POR and CSR better than BC.
YC and BWI almost seem like hybrids between GF and BC (from both a stuffiness and theming standpoint).
We book return trips to BC because we do split stays and it's a fantastic location for the EP/HS portion of the vacation. We've considered the other two EP area resorts (YC and BWI) but neither seem quite as kid-friendly as BC and even though I think SAB is somewhat overrated, I still prefer it over BWI's clown pool (even though the clown pool waterslide is better than SAB's waterside, clown notwithstanding).
On my most recent trip to BC (May 2014), the resort was looking a bit worn around the edges. This did detract somewhat from the ambiance IMO. Given that they just did a soft interior refurb, I'm expecting things to look a lot better on our next visit.