So the departure of the…
So the departure of the Legacy is timed with the removal of the Outback from the SIA plant. That isn't a coincidence... the Legacy and the Outback are 75% the same car. It's real convenient to make them on the same line. But in a bit, the Forester will replace the Outback in Indiana and the commonality of parts between the Legacy and the Forester us MUCH smaller. The other cars made in that plant, the CrossTrek and the Ascent also share little with the Legacy. So while the Japanese plants tool up for Outback, it makes sense for them to consider if they will ALSO tool up for Legacy. I am assuming that they did and decided the capital outlay didn't justify it. A little sad, considering the history of the Legacy in the US, but also an understandable business decision.
As for what "replaces" the Legacy in Lafayette, the answer is simple: more Foresters and Ascents and Crosstreks. Ultimately the reason that the Outback is out and the Forester in at SIA is that Forester was selling at a faster clip than Outback. That said, I believe that the hybrid Forester will be made in Lafayette as well, so maybe that is the answer that you were looking for.