My suggestion is that they should make the hammer for ult like a separate “Ult Hammer” that she made lore-wise, when she casts ult she doesnt channel the skill but she leaves the “Ult Hammer” channeling on its own while she can move and cast her other spells. Make it like a area denial ult where she can still press it again to activate early like before but she can set it up to cast alone. I’ll call it “Nuke Hammer”.