I see this post has been a few years ago. You have me curious on how selling the Luxury Main Line Real Estate Mansion you had went. What did you both decide on and what made the difference?
Perhaps think about 360 tours or, if want to stand out from the others, get an "all direction" tour "like the tours on the HGTV annual home give away. You could even go to a local media college and hire a student to get movie shots similar to the style seen on Home Makeover.
The possibilities are endless. The only limit would be your vision and your budget.
Hope that helps and good luck.