I've never been that impressed with the Boardwalk through its various incarnations. If I was already staying in the area, I'd stop by for a visit, but if I wasn't staying along Crescent Lake, it was never "worth a detour" in the words of the Michelin Guide.
Big River always had a very meh reputation, so I never made it there. Jellyrolls was fun, but it (along with ESPN Club) was the kind of thing I can do other places, so they were rarely things I took time out of my trip to do. Contrast that with, say, the Adventurer's Club, which I would make a point of hitting up for an adult-only trip. I never once went into Atlantic Dance. I take it that I am far from alone there, given the reports that it is typically a ghost town.
I'm not sure what would make Boardwalk an anchor. I think CBS is one example that might serve this role. I'm not in the target market, but for those who are, it might well be one of the splurges you plan your trip around. A couple more things like that might revitalize the area enough to generate foot traffic for the buskers, etc.