How about just re-locating it to a better inclination. Since the Russians
are going to star launching Soyuz from South America, there isn't an
awesome reason to keep the ISS going that far north. I haven't bothered to
do the calculations, but to drop it 20deg? Could that be something where
we could attach an upper stage built for sending things to geosynchronous
orbit and that would do it, or is it more of a issue of doing that twenty
times? It would be really nice if it was at a lower inclination, then it
could be the first stepping stone for people on exploration missions. From
there they could transfer to a L1 or Lunar station.
Tom