Ok, the things that I have noticed in the new bloggar:-
Account names are now sensible, icon for the account name now appears in the bottom of the screen. Templates can be created for new posts, files and images can be uploaded, categories and titles are now available for MT users. Posts can now be saved to disk and reloaded later on. When creating links to other pages the dialog box now has the ability to put in the text of the link and the title (thats the tooltip that appears when you hover over a link). Importing of text files, Editing of a post by id number (rather than by hunting for the post in “last X comments” etc.