Some good contributors unfortunately share an IP address with vandals. I propose
adding a user right to enable known good users with a history of being caught as
a side effect of IP blocks to be exempt from all normal IP blocks, autoblocks,
range blocks, and proxy blacklists. The proposed user right, however, would not
exempt the user from a block applied directly to the user's account.
I created a small patch (currently completely untested) which adds the new user
right (which I called 'noipblock') and a group with that right (also 'noipblock').