Even as we've been working to tie down loose ends for the upcoming 1.0 release, I've been playing around with integrating some of David Donachie's awsome improvements for post-1.0 Advokit. I managed to get his "prefiltering" scheme working pretty nicely. Prefiltering adds a new "prefilter" table, plus some fields to the team and teamjob tables, so it's not "1.0 compatible". It works by creating a list of all voter ids that match each unique combination of voter filters. The result is that voter searches, random contact list generation and team reporting speeds are not impacted by the complexity of your voter filters, and in fact when your voter pool is significantly restricted by these filters, these operations are very fast.

I have a sandbox site at http://www.communitycampaigns.net/advokit1-dev.
Log in with username/password chief/advokit (a campaign leader). See what happens when you add a voterfilter to a team! It's pretty nifty!