Low budget fix- a sign like this, a modern plantar with bright greens and bright flowers like impatients-in matching wood tones to the address plaque, placed below it.

That very dated cut glass insert can be covered with something like in the third pic OR just find a circular wodo and metal address plaque to cover that dated cut glass window.

Medium toned wood blends are warming and modern.

Painting the door charcoal would add more modern appeal.

What's the budget?😂