That's assuming Boscov's even WANTS to open here, though.
Boscov's already has two stores within 15 minutes of Willow Grove (Plymouth Meeting & Neshaminy) AND previously closed 3 other stores near Willow Grove: Montgomery Mall, Franklin Mills Mall, and a freestanding store on Godfrey Ave.
I think Willow Grove will likely gut this space and reclaim it as mall space. The same thing was done 15 years ago to a former Abraham & Straus/Strawbridge's in King of Prussia, and it's been doing well ever since then (The Pavillion at KOP).
I agree that I doubt Boscov's would have interest in the site; Boscov's adequately covers most of the Philadelphia market. Probably the only area Boscov's would want to open is in Quakerbridge Mall, but there are no vacant anchors to get in there.
One area Boscov's might do well is in Owings Mills, MD. It served that mall when it had to compete with macy's and JCP, but closed a location there.http://www.bizjournals.com/baltimore/news/2016/12/13/demolition-of-owings-mills-mall-isunderway-as.html
The mall is being gutted but will be redeveloped as an outdoor or big box center, and Boscov's might do well as a central tenant, sole department store. Unless Boscov's can get in Columbia Mall (Columbia MD) bit that's doubtful. Assuming no Columbia store, I think that Boscov's could enhance their position in the Baltimore market by serving the western side of the Baltimore metropolitan area again. The White Marsh store covers the North/Northeast side of the market. As a detached mall site, it could be like their Christiana store or Granite Run.