I suspect this is already on the radar for the product team based on a couple indications in the page builder. There’s a field picker for the section header and when you add a component to the body context configuration shows up. I suspect it’s just functionality that isn’t ready yet.
The basic idea is that the accordion should operation like a deck, queue or list, where the section headings and bodies are built from a model and using merge syntax to drive the content. In the body, you’d have options to drop different components into the body to configure the display options.
As a side note, you can workaround this with the existing component using global merge syntax like:
{{$Model.Account.data.0.Name}}
{{$Model.Account.data.1.Name}}
{{$Model.Account.data.2.Name}}
