Demo everything, add a simple design to the front of the house and a bed in the middle of the yard with a nutall oak and boulders for accent. Sun or shade? For shade put in camellias rhododendron hostas and azalea with a weeping yupon and jap maple for height. follow the path to the driveway with verigated liriope.... So many ideas are coming to mind right now...
Make hay while the sun shines!