I'll always wonder what would have happened if we'd gotten the Barometz scene right.
In the original plan, the entire mission was different. The train battle would have been in this arc instead of returning to Nightmare Heights. Granted, the plan was for her to escape so Barometz existing and the slower buildup to Tipsy Tulip might have helped her. Maybe. The physical threat of her was diminished but the implications of her inventions got boosted. Honestly...the train battle never stood a chance of being impressive in a mapless battle system.