I like the stone base. We could use brick to match house. Traditional structures like this new pergola–porch can be built from modern materials that are impervious to moisture and insects (Kleer Lumber components from Tapco).
Custom Trellis and Lattice from Walpole Woodworkers- do in a black solid stain over the north porch opening. I think I might prefer the slanted trellis instead of this, the slanted matches the front better.
Use Your House Look at the lines of your home -- it might give you the perfect spot to place a deck (and make mowing or other yard-maintenance chores easier to boot). This deck-and-pergola combination, for example, is a perfect solution for an odd space.