you're always running with ex Ambush in fire since the only fire a frame defense debuffer doesn't break 15% so in which universe i'm unaware of is it "good" to run 30% defense debuffs or wasting your ex skill with something like sniper shot / ambush for 35% because your team doesn't provide enough covering?
you're also leaving out the lack of a frame attack buffers that fire has so 15% attack 35% defense? yeah no
fire as it is isn't viable and her having a nuke doesn't make her any better since there's already two designated fire himes that have and they are worse than a few SR's of the attribute rage throttle is all there is to her about the affliction thing you're always running Mordred or Joan with Fire so huh
anyways pulling her isn't personally good if you plan on maining Fire it's more like a sentence/limitation to your building capabilities even though her + summer Sol would make a fun combo we're talking about a limited hime there
remember boys the priorities for team building are in this order Debuffs > Healing > Damage unless you have an insane weapon grid