This tool addresses a surprisingly common pain point in the VTuber community: transferring parameter settings and keybinds from one VTube Studio (VTS) model to another. Anyone who has spent hours meticulously configuring a Live2D model's physics parameters, expression keybinds, and tracking sensitivity knows the dread of switching to a new model and starting from scratch.

VTube Studio stores model configurations in JSON files, but manually copying settings between models isn't straightforward because:

• Parameter IDs may differ between models even when they control similar features
• Keybind structures reference model-specific artmesh and parameter names
• A straight file copy will often break the destination model's configuration entirely

A dedicated transfer tool that understands VTS's configuration format and can intelligently map settings between models fills a real gap. The VTuber tooling ecosystem is largely dominated by plugins that run inside VTube Studio, so standalone utilities like this that operate on the configuration files directly offer flexibility that in-app solutions can't.

This repo would be useful for:

• VTubers who commission multiple model versions (outfits, redesigns) and want consistent behavior across all of them
• Live2D riggers who deliver models to clients and want to provide a migration path from their old model
• Content creators who frequently test or review different models and need a quick way to apply their preferred control scheme

It's a small, focused utility solving a real workflow problem rather than trying to be a general-purpose platform — exactly the kind of tool that deserves more visibility.