Thanks you very much for your site(service) and plugin for firefox, but i often use "fill forms" and i wish to recommend - add into forms lines: contacts ICQ, AIM, MSN, Yahoo, Jabber and "website" + Interests.
My vote goes to a new feature not yet in the list: a Save Form Feature!
The current fill form feature match only common fields (name, address, country, phone, etc) but do not support custom form. I was a Roboform user until I migrated my password with lastpass. This is a feature that is still missing in lastpass and is a big seller point for Roboform. For repetitive form filling (QA, Dev/Test form process or for any other good reason) it would be very nice to fill a form and save all fields/answers. This new feature could also help with challenge questions used on bank and other 2-3 phase authentication process. By just saving answers to custom fields.
I would like to see customization of generated passwords, such as excluding similar characters like 0 and O and I and l and 1 (thats zero and capital 0 and capital i and lower case L and one). I try to avoid using those in all my passwords because when reading them they are sometimes difficult to differentiate.