Just musing on my own thoughts here a bit but having the choice between Mordred and Joan of Arc which one would people unlock?

I have every other Legendary soul already except for Mordred, Joan and Solomon, and was lamenting a good defensive soul on the last event so I was leaning towards Joan, just wondering what I would miss out on the wait to get Mordred if I do unlock Joan first (all my element parties are around 34 - 36k ATK and I find Sieg already great for Rage control).

Also 2nd question - just wanted to check whether or not any other Legendary souls are close on the horizon I should save for instead?

Thanks for any replies.