DIY Poster-Size Printable Images
I recently used SnazzyMaps to create a 24" x 36" engineering print. I found it very tedious to have to stitch together various image seams to get a large enough view. I think the downloadable images feature you currently have would be worth a premium if you added better control over the size and zoom-level to save at a standard, printable resolution.
You can read more about my use of SnazzyMaps here https://www.reddit.com/r/malelivingspace/comments/6to5c2/new_wall_art_for_about_50_total/dlmcvjp/