The siding looks to be T1-11 (pronounced 'tee one eleven'), 4x8 sheets of a plywood with a rough-sawn surface made to look like 8-inch vertical boards (which align with 16" or 24" stud spacing, making fast, easy installation.

I think that the front deck looks better than stoop would (but the lattice should be dark and the railing could be a better looking style).

You definitely have a challenge there. Besides paint, I'd enlarge the 2nd floor window to the same height as the other 2 (it looks skimpy), and the front door doesn't match the style of the house at all. The foofy oval glass insert clashes badly.

Oh, and plants.

If you are thinking of buying it, I'd pass. If you already own it I have a few ideas.

I happen to love pink houses. Sadly, it does not suit this house. A neutral color would be better. There is no reason to paint house corners in an accent color. The purpose of the horizontal boards is to cover the seam in the siding. It also should not be painted to draw attention. I'd paint the vent the color of the house. They can be a pretty accent but your is mundane and I would want it to blend in.

I love porch sitting and I can't imagine why you would not use a porch. However, it is not attractive. It was probably cheaper than pouring concrete.

If you have rafter tails above the door , or any other form of bracing, then I suggest removing the brackets. They are not pretty.

This is not a colonial house so I would find a non colonial porch light.

T-111 is greatly improved by adding battens. The battens should "fit" into the "grooves" of the T-111 and project out past the siding about 1 and 1/2 inches. Increase the width of the trim (double it) around the garage door.

Pick three colors that go well with each other AND the roof shingle color. Paint the the siding (including the horizontal boards where the panels of siding meet), the floor of the porch ,the lattice under the porch, and the garage door the darkest color. The frames on the windows and garage door and the porch railings get the middle color. The front door frame and door get the third "brightest" color. All paint stores have a selection of colors that "go together" so you can't screw it up...just pay attention to the roof color when selecting.

The stairs are sinking because the "base" is sinking. Take off the stairs and remove any pavers / whatever between the end of the porch and the driveway. This area must be leveled with the driveway before new stairs are installed. Cheapest would be to dig down, install a metal form, backfill with gravel, tamp and water well, repeat until solid. (It's Denver, consult your gravel yard for depth suggestion.)

Remove the brackets on either side of the front door (if possible), otherwise just paint them the same as main body of house. A new door with a square window / no window would be nice. A recessed porch light installed in the soffit over the front door.

If the base is sinking, you may have to consult an engineering firm that specializes in building sites. My husband works for one and they check everything from rivets, soil, concrete slump, and if a property is suitable for the type of construction you currently have.

The front porch of this house is very bad. You need some renovation for your front porch. I would suggest that the front porch stairs be curved in shape. It would give a majestic look to your big house. Then, build a driveway from the entry to the front porch.