Wow. I didn't even realize that there was an export tool! I am all for revamping it for increased usability, including all of the following:

In summary, what I want is for the export tool to
a) Allow you to export entries by year
b) Allow you to export all your journal's entries at once
c) Provide understandable and useful options that will not make your export useless or incomplete in ways that you did not mean (e.g. if, for some reason, you do not select "Event", none of your entry text will be added to the export file)

Details of c) as suggested in other comments before I got here:
c1) Include tooltips on each option and field to explain what it does or is
c2) Include a direct link to the FAQ for more detailed help
c3) Include a verification step to check whether the selected options result in an empty file

And I'd like to add the following to the wishlist on my own account (basically, anything you can import, you should be able to export):
d) Allow you to export the full richness of entries (if the exporter already does this, it isn't at all clear that it does):
d1) icon, tags, mood, music, location, age restriction and reason, etc.
d2) comments (possibly translating users to openid?)
e) Allow you to export your journal basics
e1) bio
e2) all your icons
e3) all the people you're subscribed to, and those you give access to (possibly translating users to openid?)
e4) all your custom access groups (possibly translating users to openid?)

And yes, I would expect some of these options to be paid features if implemented at all.

But seriously, the UI desperately needs to be translated to plain English so Joe Not-a-Geek can use it too!