Let's Encrypt has a staff of 16. I'm not unsympathetic to sales, marketing, DevRel, etc (ongoing BAU and solid growth are both crucial to an established enterprise) but a gap of low teens to 7000 people for using emails to proof identity and store documents for retention periods? Come onnnnnnn.
For instance, marketing sometimes has its own developer / engineering teams, rather than running their work through the engineering org. Thats an example.
At Bulksign https://bulksign.com, we're building a digital signatures platform which has comparable features with a tiny team.
DocuSign and HelloSign are terrible in this respect. Just give me a simple, straightforward way (Ie couple clicks max) to dump every single signed document and their metadata so I can pass it to auditors. That would be a great feature.
Also, at this point I feel they could coast a bit on the sales. They are the standard in the USA, period. IMHO the service is suitably viral and must sell itself in large part. (I could be way off on the last assumption.)