Simplified interface and options.

I want to simplify the available options and interface for registered users, who as ‘Author’ should be able to:
Update their profile.
Add new posts, and edit their existing ones.
Edit their comments.

The standard interface is confusing, and by listing options which aren’t available (example: lists all posts, not just their own) likely to be frustrating.

I simplified with WPLite, but there’s still too much.

Examples:
‘Manage’ and ‘comments’ still show all posts.
I want ‘Publish status’ to not include ‘pending review’. And ‘Keep this post private’ to not be available.

Suggestions appreciated. Please and thanks, etc.