I would think the best F&W resort after BCV and BWV would be BLT.
While most think of taking the monorail to Epcot, depending on the World Showcase area you want to go to, there's another alternative if MK is open.
If MK is open, you could walk to the MK bus area and take a bus to BCV (or BWV), then take the short walk to the countries. MK tends to have the most frequent buses.
It may sound like a lot of walking, but the walk from the Epcot (bus or monorail) to the countries should be similar.
Additionally, from BLT (during most of F&W there is also
MNSSHP going on). Even if you don't go to MNSSHP, you can see the fireworks from many places (including TOTWL). In the past, they are event only fireworks. When we were at BLT in December, we were surprised to see how much nicer the
MVMCP fireworks were compared to the normal fireworks.