I can think of a few suggestions:
*will it be updated for xenforo 2.3?
*Top Terms: Sorting options by highest performing - or most searched for terms in admincp
*after X days, prune the log and add the search queries as tags
*Blacklist search queries
*Show the latest X search queries.
*schema.org structure support for further seo, so that google and other engines have a identifier on what this is & how it's separate from the main content.