Maybe the door would be good in red? But I always think that. Still.... Or how about a teal or soldier blue door? It's a cute, cute house. Maybe that horizontal rod going across the storm door is removable. I've had storms like that. If you could take the cross piece off, it would let the nice wood door show better. And the light that awmo3 posted would look great on your house. A variegated red-twig dogwood would be good, maybe on the left hand corner. They have nice bright red stems in the winter. (Oh-oh....there I go again with the red.) I'm in zone 4. My dogwoods are the nicest color I can have in the winter. Otherwise it's pretty blah in the middle of winter. You might also consider some Annabelle hydrangeas. They are so pretty in the summer and have a nice old-fashioned look. If you want to, you can leave the big pom-pom flowers on all winter and cut them back in the early spring. The blooms turn rusty brown color and it gives you something out there in the winter. And also one or two small evergreen shrubs would be nice out there so you have some dark green color during the winter. Then plant some daylillies and some asiatic lillies for summer color. If you expand those planting beds out a ways so they are deeper, and make them a curvy shape, that will add to the look too. If you leave the stained porch as it is, you could get some golden or medium brown cedar mulch for the garden and that will tie the porch color into the landscaping.

Here are suggestions for a simple scheme that keeps some lawn. The first thing I would do, though, is bust out the end of the walk (where it meets porch) or maybe the whole walk, and redo it, adding space and width. A skinny walk with little space at the porch makes the whole house look cheaper. If breaking out and redoing is not possible, then find a way to patch on some extra space.

It's a fact ... you'll not be able to get rid of the mess until you create a permanent, hard walk where there is now mulch. The magnolia roots are going to make it harder, but it must be done if there is to be a cure. I agree with others that something like concrete (simplest and cheapest) or pavers/brick are suitable. A walk laid out to acknowledge the tree will look and work better than one that doesn't. The bench only makes sense if there is a way to get to it ... i.e., use it. But because of Magnolia roots, it would add a lot of difficulty extending the walk to the bench. Therefore, I'd recommend using the bench elsewhere and having only plantings at the front of the house. Consider using a groundcover like Asiatic Jasmine to cover the magnolia roots.

How old is your son? That's a small yard to incorporate much play area after the patio is constructed. Doug's design is ideal but there goes the play space. Could you install fencing this spring and hold off on the patio for a couple of years? Put two adirondack chairs on the lawn in the shadow of the house for the adults. When your son no longer needs the grass, implement Doug's plan.