Forking the PrimeVue Figma UI Kit as our product design system — valid in practice?

Hi everyone,

Our product is moving to PrimeVue 4.0.0, and I'd like a reality check on our design system setup.

Current approach: we copy individual components from the PrimeVue Figma Kit into our design system and keep them linked to the PrimeVue library.

What I'm proposing instead: duplicate the whole PrimeVue Figma Kit and use it as our own separate design system library.

• All PrimeVue components stay unchanged.
• The main customization is our own primitive colors, plus adjusting PrimeVue settings to match our design.
• We keep PrimeVue variables as they are. Our own variables go into the custom folder in PrimeVue's variables.
• Our custom components and icons have separate names, agreed with our developer.

Updates: when a new PrimeVue Figma file comes out, I'd compare it with ours (with AI help if possible), then move the needed changes manually. If the changes are too big, I'd copy our custom parts into the new file instead.

Is this a valid approach in practice? Has anyone worked this way with PrimeVue or a similar vendor kit?

Thanks!