I think you should go with how YOU feel, not how the rest of us feel. I love OKW because I don't particularily like the hotel feeling of the other
DVC resorts. I also don't happen to think there is an advantage to doing Epcot or MGM from BWV if you are a morning person. If you are wanting to do WS, then Yes, it is easier, but if you want to do FW early in the day, it's a LONG hike! It is about the same hike to MGM, but you CAN take the boat if you don't mind spending the time it takes to do that. Walking is definitely faster than the boat.
I love the quiet, vacation home feel, parking outside your door, terrific bus service, huge units, great restaurant and magnificent water/golf course views at OKW. If yo are planning on having a car, it is MUCH easier for the access to that, since there is no need to be so far away from a parking lot or to use valet parking.
I think the activities of the Boardwalk are great for young couples who are chiildless, or older couples who want the night life. For you with a toddller, I would definitely think OKW is the better choice for this trip.