6.5 years from now gets us to 2020, which is consistent with the Brandon Farris prediction at the top of this thread.
I also think the AA and US West merger saved the AA MD-80s, by soaking up some of the huge AA aircraft orders to renew the US West fleet. Otherwise, this avalanche of new aircraft would have landed solely at AA, and the MD-80s would have been toast.
It will be interesting to see the disposition of ex-TWA MD-80s that are returned to the lessors. I can think of 4 likely scenarios:
Some Latin American or African airline(s)
My heart would want Delta, but I think if Delta can get the EVA/UNI MD90s into their fleet, they might be less inclined to add MD-80s.
Allegiant has a big MD-80 fleet, but is lately adding A319s, so I discount them adding more MD-80s.
The parts bin can't be ruled out, but it would be too bad to scrap relatively young planes.
I think a Latin American or African operator is a likely scenario.