The legal arguments that lie here are lawyer's arguments, that are difficult to teach to laypeople. Few people reading this forum are "at that level," and those who are, can read the law and make up their own minds. The rest of you are, for better or worse, stuck with choosing a side based on who you find more credible.
I reflect on the number of lawyers posting here, who misunderstood Rogers v. Bellei. I've personally interacted with at least two, at length. Rogers v. Bellei is child's play, compared with the question of who can hear an eligibility case, and when they can hear it, and who has standing, and when, and even on the question of ballot access, because the people choose electors, not nominees.
P.S. -- I am not a lawyer, but I've been told that I should have been. LOL.
It's hard to avoid posting "legal arguments" on this subject when my contributions have generally been limited to threads like this one where candidates like Trump and Huckabee make specific suggestions about legal proceedings.
Personally, it isn't likely to matter in the long run. It would only be an issue if Cruz were to win the GOP nomination, and by that time other GOP candidates like Trump and Huckabee won't be in a position to make a big deal about it anyway.