I would like to see Kiwi (and Orion syslog for that matter) be able to include a daily message type summary along with the statistics that we can already get. Terry Slattery has a post on this feature on his blog:
connection.netcordia.com/.../syslog-summary-script.aspx
This would be incredibly useful to find syslog messages that occur rarely.
Even better would be the ability to fire an alert on a syslog message type that has never been seen before, or to search by "rarity" (I believe Splunk has this feature).