Option to set a fallback data source for short-range weather models

I would like to set a secondary data source (fallback) when my primary weather model has limited forecast range. Currently, when I select a high-resolution, short-range model like Météo-France AROME, it only covers 2 days. This leaves the remaining 3 days empty on the 5 day view and widget.

It would be great if the app could fill the missing days using a secondary source (like ECMWF or GFS).