I like the Flowmapp sitempapping tool, definitely the best I’ve used so far. It’s quite feature rich ,but I believe there are two things it should offer (and should have offered before adding the other features on) which will really improve its efficiency for creating large scale site maps are, in order or priority:

1. The ability to expand and collapse all pages in a row or level. For large scale sitemaps, this allows the Information Architect to quickly show stakeholders the sitemap proceeding from a zoomed out high level view to a zoomed in granular view. For example, this would allow me to quickly show that the homepage has 15 sections, and then immediately expand pages only one level below (or expand everything all together). Without this feature, depending on the breadth of the website, one could take ages to go about expanding child pages.
2. The ability to allow for marquee selection, or more importantly (but easier accomplished as a product feature), the ability to select a row or level of sitemap pages,
3. and then apply the same cover image to applied to all sitemap level pages. E.g.- if level 2 pages are navigation pages across the board, I would like to apply the same cover image for them. Right now, if there are 15 of these pages, I will have to apply them individually 15 times. Row level actions for other features would make sense too.