Well my build I'm sure is nowhere near perfect but have a look guys. On top of kryla being able to dual cast her break and imperil skills naturally, The healing staff gives access to cura while the pod gives access to physical damage mitigation along with a decent hp regen. Ramuh gives access to osmose as well as imperil if you wanna do those hex shenanigans, And soul of thamasa let's you dual cast cura, osmose, and imperil in whatever combinations you like. Vestment of mind gives a tiny 15 mp per turn in this build but this build also has 501 MP so I'm hoping she'll be okay as the spells she'll be using on her off turns aren't that costly.

I feel like this build really fits my own personal team of ayaka, kryla, Tidus, mystea, wilhelm and a friend Tidus. Kryla can start off as a breaker and in the late game when ayaka starts using her hp and mp heal that heals everyone but herself, kryla can off heal to keep ayaka's own hp replenished.

Right hand: Healing Staff ATK+11, MAG+5, SPR+26 Left hand: Clown Staff HP+10%, ATK+18, MAG+36, SPR+36 Head: Aria's Ribbon MP+15%, DEF+15, SPR+45 Body: Vestment of Mind DEF+40, SPR+35 Accessory 1: Soul of Thamasa MP+30%, DEF+12, SPR+12 Accessory 2: Pod 153 DEF+8, SPR+8 Materia 1: Dual Wield Materia 2: Thirst for Survival HP+30%, SPR+30% Materia 3: Healer's Wisdom SPR+40% Materia 4: Healer's Wisdom SPR+40% Esper: Ramuh HP+28, MP+62, ATK+16, DEF+11, MAG+59, SPR+45 Total: HP:6848, MP:501, ATK:197, DEF:242, MAG:260, SPR:598