It is handy to be able to reorder your filters so that one that does better is ahead of one that isn't performing well without having to delete and re-enter them or edit the filters.txt file in MWP 6.x.
In the Beta it would be nice to be able to reorder the mail accounts and the DNSBL entries:
-- The accounts just because you might want to move a slow one to the end or put your most important one first.
-- The DNSBLs because they are checked in the order listed and checking stops on the first positive result. Checking the server that has the most positive results first cuts down on the number of checks done and speeds up the Origin of Spam tool.