I came up with this dilemma, when I read the suggestion a poster had on this board for having Jon Kent as Superboy being the leader of the LoSH when they (eventually) return. I first shrugged off this idea, discarding it as silly. However, when I thought about it more and more, it actually made a lot of sense. Historically it is commonplace for an iteration of the Legion to feature a member of the Superman family. Whether it be Superman as a young boy, Supergirl, or one of the their distant descendants.
Nevertheless, this leads me to my main question: Should DC make the Legion of Superheroes part of the Superman franchise? The comic book industry is not as prosperous as it was when the Legion were last popular in the 70's and 80's. Considering the absence of the LoSH for almost the past decade, and their convoluted history, it is possible the when the team returns, new readers and more casual comic book fans, will simply not be interested in the Legion of Superheroes. Making them more engrained in the Superman brand and mythos, and more synonymous with the Superman character might help them become seem more appealing to potential new readers.