Should more models reproject inputs?

[emlys]

Hard to believe this hasn't come up before, so maybe I'm missing something.
DelineateIt validation checks that the dem_path and outlet_vector_path overlap. "different_projections_ok" = True so they're transformed to wgs84 before comparing. The same thing isn't done when the model runs, though. check_geometries compares the bounding boxes in their original projections. Here is a case where this comes up.

[emlys]

Updating this to a more general issue. Most models reproject their inputs together but some don't:

• Carbon
• DelineateIt
• Forest carbon
• Habitat Quality
• Recreation
• Scenario gen proximity
• SDR does reproject inputs but has "different_projections_ok": False

The user's guide isn't clear about which models require inputs all in the same projection. Seems like reprojection is a nice feature to have. Is there a scientific reason that it doesn't make sense to reproject these models?