In reply to Dr.S at work:
> Sleeper to corrour, walk to aviemore.
> Reasonable number of bothies, both valley and tops options depending on weather, can bail at dalwhinnie, worst of the weather at your back?
That sounds good, although I've never spotted a particularly natural looking route from Dalwhinnie through to Glen Feshie or Glen Tarf.
Similar things I've got my eye on would be:
Glenfinnan to Inverie
Achnashellach to the Cluanie Inn
Blair Atholl to Aviemore via Glen Tarf and Glen Feshie and back via the Lairig Ghru and Glen Tilt
Dalwhinnie to Fort William (or Kinlochleven)
etc...