-Spd/+Def Minerva worth it? Or Pass the L&D Torch?

I have a Minerva recently summoned, but the IV's are not incredibly optimal with her. She has great tanking potential, but if not a wise thing to invest in, who should get the L&D torch?

Candidate List

Beneficial
Bridal Cordelia- +Atk/-Res
Raven- +Atk/-Res.
Ryoma- +Atk/-Def. (Currently has L&D 1 and 2 only)
Setsuna- +Spd/-Res (The Quadsuna)

Maybe Beneficial(?)
Delthea- +Atk/-HP. If you thought she was frail before, she truly will be the glass canon that will shatter when a butterfly lands on it.

Sonya- +Attk/-Res It's obvious Nino does a better job running this, and I already have a Nino who has all 3 stages of L&D. She may wanna stick with Mirror Strike or another A passive in general. She already has a bane in Resistance, but it's not a insufferable to deal with on her than some units at least.

Linde- +Res/-Spd My Linde in general is probably the least optimal to run it, though she would get some benefit from it. I just feel it wouldn't make any sense to take away from her boon, and her speed is what makes Linde so powerful in the first place.

Leon- +Spd/-HP Leon is another candidate who could potentially run the quad brave as well. I'm no where near close to having a brave bow sadly (unless I got rid of Klein, but that's just a crazy option), which is why I don't think I should invest with Leon at this time. He's max level, and has no passives.

Klein +Attk/-HP And speaking of dropping Klein, which would still be kind of crazy, but he has plenty of SP and could potentially use L&D, but Klein relies so heavily on Death Blow in general to bolster his attack, even with a boon in it honestly.

All in all, I can see either Leon, Delthea or Bridelia inheriting the skill. It's awesome I have so many attacker boons, but not many speed boon heroes.