I want to create a component which 1) has an arbitrary number of instances inside, and 2) I want those instances to be reorderable

[Equinusocio]

Unfortunately, this is not a good solution for big component libraries or design systems across many products. We’re forced to make anything a component to put it inside the eg. modal.

They also closed the original Slot feature request. I don’t like Figma anymore.
Reopened it here

Slot feature / Wrapped content

Reopening this My suggestion for Figma is to add a “slot” functionality to components. This would allow designers to create more flexible and customizable components, by adding empty slots or placeholders within a component. Users could then insert their own content or elements into these slots, without having to ungroup or modify the component itself. This functionality would save time and increase efficiency for designers, while also promoting a more consistent design system ac…

Add a "slot" functionality to components

I discovered the request regarding a repeater functionality. I think that request relieves the pain a bit for components that are not extensible.