User dishware in the Bitcoin forums has these suggestions for the transaction lists:

• Add grid lines separate each record
• Allow ascending/descending sorting
• Add serial number to the list

The original suggestion, complete with mocked-up screens, is here: http://www.bitcoin.org/smf/index.php?topic=5848.0