If we worked as a hit-and-fade force, I believe we could be quite effective, even against substantial forces. Besides which, I have a vast number of their codes and other information in my internal databanks - that would be an advantage in and of itself.

It's more to be aware of who and what they are...some could put on a very good show of being, well, entirely normal.

As for Fallen Jedi, or Sith - it is apparently a distinction? - there are tactics and weapons that can be effective. The key is not letting them close the range.