Stay unsubbed. I would level alts, but with the level squish coming with SL (or its prepatch) that seems pretty pointless to do now. Also SL promisses to be much more alt friendly, so yeah, nothing much to do in WoW I can't also do in SL. Except getting the Brontosaurus. But that one is not worth the time investment I would have to make.
may i suggest a skinning knife?