Link back Chugoku and Honshu, the travel time from one Dragon base to anther is currently insane. It was tolerable when you had to do Chugoku->Hokkaido->Honshu, but now you have to traverse at least 2 systems: Chugoku->Tohoku->Hiroshima->Honshu or Chugoku->Hokkaido->New Tokyo->Honshu.
It's ridiculous, remove the Hiroshima-Honshu JH and bring back the Chugoku one ):