I have recently duo-ed Coil Savage with a friend. We now have some very cool titles as a result. Most of the fights were face-roll easy - Nael took a bit more work - but it was an hour of fun that we enjoyed. I am currently using one of the titles because it matches where my WoL/WoD's head is right now.
We didn't do the runs for the titles, we did them to see if we could. Do I think us having them devalues the titles. Yes and no. I don't attach any value to them because I know we got them easy (more because we didn't have to deal with the mistakes of another 6 people, just our own derp moments which were funny and not annoying) and neither of us go around flaunting them. But I would understand some who got them back in the day being unhappy we got them with so little effort. But I have no idea what the solution to that is. Shutting off Savage Coil would also piss people off. I guess the only answer would be to make it sync'd only, and then no one would ever do it ....?