So, will critical damage mod sets now be useless?

I'm a history nerd, not a math nerd, sorry (But peace, love, and respect to all my nerd brothers, sisters, and non-binary siblings) so let me make sure I'm getting this straight:
If a character has base 50% crit chance or less, mod for crit damage.
If a character has base 50% crit chance or more, mod for offense.
Does this change for leaders with abilities that increase crit damage (Boba Fett, Jedi Rey, etc)?