CAPTCHA implementations continue to get under pressure. Some plug-ins to the ConfirmEdit extension may already be considered useless. During the recent days a discussion has taken place  which lead to ideas of improving the QuestyCaptcha plug-in which seems to be the strongest CAPTCHA implementation currently available. Since this plug-in requires more administration than the others the proposed enhancements mainly focus on improving it.
The proposals are:
A) allow maintenance of Q&Ass from the wiki itself. This could ensure that for example sysops can regularly update the Q&As in case a spam bot does get through. (siebrand)
B) allow arbitrary selection of of Q&As to be shown for confirmation from the wiki itself. Thus more dynamic variation would be possible without having to invent heaps of new Q&As or to remove them. (kghbln)
C) allow statistics on success/fail for Q&As to allow fine tuning. (siebrand)
It would be great to see an implementation for this. People will really love you for this.