Does this mean Obama's immigration plan will only be carried out if the next President wants to do it?

I'm trying to delve into the true import of this NYT article titled "Immigration Overhaul May Be in Limbo Until Late in Obama’s Term." The headline seems to inject some optimism into the scenario. Let's look closely:

1. There's a preliminary injunction in place preventing Obama from going forward with his plan, and the Justice Department has chosen not to go to the Supreme Court now. So the litigation continues on the merits in the 5th Circuit Court of Appeals, which will take some time. When it ends, whoever wins will seek Supreme Court review. That's going to take some time.

2.  How much time? The NYT says: "That legal battle may extend for a year or more, officials said, undermining any hope of putting the president’s plan into effect until right before the 2016 election." I take that to refer to the possibility that the Supreme Court (assuming it takes the case) would come out with a decision before it goes on its summer break, which would leave Obama with half a year to go forward with his plan.

3. Would Obama start up his program right on the eve of his successor's election? It's a political problem, but it's not just a political problem. Politically, it might help the Democratic candidate to have the program begun so that she (or he) can say you need me to continue it. Pressure could be put on the Republican to say whether he'd keep it going or not and what he'd do with the problem instead. Obama could choose whichever works better for the Democrat, when the time comes. At a late point in the campaign, he'll have the power to affect the factual context of the immigration issue.

4. But it's also a practical problem. It's a program that invites undocumented immigrants to "come out of the shadows." Who will want to do that in late 2016? If it won't work, because those who are eligible to come out lack confidence that the program will stay in place, then why do it? Well, the reasons discussed in point #3 might still hold. Begin the program for show. You've got a safe haven for people but the people are too afraid to use it. Look! Isn't that sad! Don't you want to vote for the candidate who will make it possible for people to use this wonderful plan Obama thought up? That's the political argument that could be built on the practical problem.

5. The political argument built on the practical problem only works if it turns out that voters in the swing states want the reform and approve of Presidents acting independently of Congress. But, as noted in point #3, Obama will make the decision close to the election, so he'll have up-to-date  information about how people feel — not only what they think about immigration but whether they're susceptible to the argument that it's important for Obama to end his presidency on a high note. His word is "HOPE." Wouldn't it be beautiful if he ended with this success that is the very essence of hope? Will that idea resonate in the summer and fall of 2016? He can decide when the time comes.

6. Points ##3, 4, and 5 all assume Obama will win in the Supreme Court. That's unlikely, I think. If he loses, however, he hands his party's candidate an excellent issue: those terrible conservatives on the  Supreme Court who are ruining everything.