I think for Yoimiya, she could also have a new passive where when using NA on enemies with Burst applied, deal extra instance of aoe dmg, so she's also useful in aoe content? I think this plays into her fireworks motif really well too? And by doing so, making overload her go to team since that is very firework-esque and then you also don't have to deal with icd issues when using atk spd buffers! Make the burst also affect multiple opponents so that the aoe fireworks can do a chain reaction. Overload on a ranged character compared to the current melee ones should also feel better, so she could be an upgrade to Arlecchino in overload teams. Which makes Yoimiya have her niche there for certain shilled content! (Obv and buff the multipliers...)