I think The Empire Strikes Back is a good title, especially for a sequel, but I really don’t like any of the titles very much.
The more I think about The Empire Strikes Back as a film title, the sillier it sounds. People tout Empire as a darker, more serious film (which it is), but it may have the goofiest, most pulpy title of any SW film.
But ESB as a film is also pretty pulpy and goofy (though admittedly not the most so in the saga). Attack of the Clones is easily the silliest title though (and silliest film for that matter, though for mostly different reasons).
That said, it’s sufficiently vague which seems like something you’d want in a film title. Something like The First Order Makes Chase apart from being kind of boring, is far too literal. The goal shouldn’t be to summarize the plot in the film’s title, but rather to create intrigue. Viewed through this lens, The Last Jedi kind of works perfectly, begging the question “Who is the last Jedi?”
The Last Jedi is pretty much the best title you could come up with for that movie. Really the only issue is that it breaks quite a few of the traditional SW naming conventions (at least three by my count).