Should I do this?
And if so.

What Devil Fruit?

And which anime?

RWBY
or
MHA

Now for other matters, like the team.

Which Devil Fruits should they have?

Mago-Mago no mi(I think) : Logia: allows the user to create magma from their body

Tori-Tori no mi: Moderu "Fenikkusu": mythical Zoan: allows the user to transform into a blue Phoenix, grants them healing blue flames, and powerful regeneration.(i as definitely adding this)

Yami-Yami no mi: Logia: allows the user to become darkness, this darkness has a powerful gravitational force and can destroy nonliving things, shredding them, it also grants the user infinite space within their elemental body and even lets them erase devil fruit abilities when touching someone with their hand.

Bara-Bara no mi: Paramecia: allows the user to split their body into pieces, rendering slicing attacks useless.

Gomu-Gomu no mi: paramecia: gives the users body the properties of rubber, allowing them to stretch to imagination's limits.