

Each one of those bullet points is potentially a way for Comey to get his whole case thrown out. In addition to that, Comey has 4 other motions to dismiss pending right now, and they’re pretty good arguments. At this point, Comey has so many different ways to win, that it is really hard to imagine that he won’t win on one of them. (In which case he still has an entire trial to defend himself on).
The issue where there’s no case law is a pretty narrow one, I think: The grand jury voted to approve the words of the charges (except that the charge numbers were different), but not the specific piece of paper that the words ended up typed out on. Is that important for the formal charging process or not? Either way this gets decided, it won’t effect very many people, because any competent prosecutor will just re-run the new piece of paper past the jury to make sure. And it may not get decided at all if Comey’s case is dismissed on any of the other reasons.
EDIT: If it’s not true. If it turns out that the grand jury no-billed all three counts, then we’d be looking at a forged indictment. And that would be a serious crime.

Finally, these two letters, thorn and eth, dropped out of English a long time ago, but they’re still in Modern Icelandic today.