Ahh.. Gotcha. No, JFBConnect can't import or prefill other fields than what comes from the users social network. If you want to prefill those fields, you'd need to do it using some other mechanism.
Regarding Avatar import, we do support that for various extensions. However, we don't have a EasyProfile specific profile plugin, which means we don't support avatar import for that extension. Each profile extension has very specific methods for altering and saving avatars, so it's a unique set of code that needs to be generated for each extension. We do have code to easily download and save an avatar for a user locally, it's just a matter of processing it specifically for EasyProfile that would need to be determined.
Right now, we have EasyProfile on our to-do list for investigation, but I don't have any timeline on when we'd be able to implement the above features. If you contact the EasyProfile developers, feel free to let them know you'd like integration with JFBConnect. We have documentation on how to create a social plugin and work with many developers to speed up integration development when they're interested.
Thanks,
Alex