I am really excited about this whole initiative. Mostly because encryption should really be standard at this point if not for the hurdles one has to face in deploying it.
What type of help is the Let's Encrypt team still needing?
Glad you like the project!
Contributing to our software is one way to help:
https://github.com/letsencrypt/boulder
https://github.com/letsencrypt/lets-encrypt-preview
Also, if you work for a company that might be interested in sponsoring us, starting that conversation is another great way to help out.