Flattening Image into new document

In order to prevent oversaving psd files when flattening images, I think Photoshop could offer a couple options:

1. Open the flattened image in a new document (with the same name as the psd)

2. Open a window to export the flattened image without actually merging all document layers

3. Add an option when saving/exporting to export a flattened image

I think these choices would give users more control over their exports and help them work non-destructively without the need to make a copied psd file of the original in order to prevent accidentally saving over. Thoughts?