We will add paneling with grasscloth above, a new stair runner in a pretty and transitional pattern, elegant furnishings in the foyer, and a big upgrade to the lights, including adding in a chandelier over the stair landing, framed by gauzy drapery panels.
This was some inspiration for paneling:
And for the grasscloth:
Here is the carpet, William Morris wallpaper for the entry vestibule (no the brown ground), grasscloth for above the chair rail, and sheer embroidered linen for the landing drapery.
And here are the three options for the foyer looks: