[tor-relays] Work with ISPs

Hi list, With the recent warning by nusenu about the malicious relays and the proposal to work around the issue , ive been wondering: Did anyone ever try to convince some isp to put a low-cap tor relay on the router of their 'unlimited bandwidth' clients? Or has there been any discussion on that matter already? I understand most would be strongly reticent, but I think some may find a commercial/marketing value in this. Thanks, Charly