I have stalked the CL forums, and it seems BWI is the absolute favorite of the Epcot resorts. At least that's the way it seemed to me.
We've stayed at BC CL (immediately prior to the 6 FP option) and our room was really nice with very comfy beds.
The walk to Epcot was so nice.
It does indeed appear to have become the new favorite, but favorites on the DIS come and go. I remember one lady who used to post praise for Pop almost every day in every hotel thread.
All of the WDW hotels have pros and cons though.
A plus of BWK is that it is walking distance to both Epcot and HS, but so are S/D nd BC/YC. Otherwise, transportation to MK+AK is by bus.
The new food options at Bwk also seem to get high ratings. My most recent Bwk stay was before the recent menu updates, so I can't comment on those. Except to say, I've seen many changes in CL food offerings. I wouldn't 100% count on those staying the same. When a chef moves, change happens, and WDW hotel chefs frequently move around.
The potential downsides of the BWK- and these are subjective are as follows:
1. Bwk is a large, sprawling resort. It takes a while to walk from one end to the other. Some of the CL rooms are a LONG way from the main pool. That said, there is a closer quiet pool.
2. The main pool leaves something to be desired, by many accounts. Some folks love the slide, others hate it. Otherwise the pool is deeper that practically any other WDW pool. The BC/YC main pool area has more fun features. The Swan and Dolphin pool areas are also pretty nice. Not quite as nice as YC/BC, but it has nice hot tubs, a decent water slide, and a nice grotto.
3. Bwk parking can be a bit of a hassle. WDW hotels and S/D now charge for parking. S/D also charge a resort fee.
4. Some folks have previously mentioned late night noise out on the boardwalk area. It never bothered us, but previously it was often mentioned on the DISboards.
No matter which you pick, you can easily walk among both for dining, shopping, surrey bikes, shuttle boats.