VCs might not need this (yet). But I can see this selling like hotcake to the impending ballooning new group investors in the startups scene enabled by the ranks of wefunder.com, fundersclub.com, etc. Go Danielle and team!
I think it'll also prove useful for companies wanting to make acquisitions or poach employees, journalists, and as sales leads when companies reach different growth stages and require new/more tools and services.
The mailing list will be worth something too.
This was my thought exactly. Even with seed funds and angel investors, the number seems small (AngelList for example shows about 18K investor accounts).
Perhaps the amount of money they have (and you can charge them) offsets this a bit.