Right between the two larger plams> I would add a nice waterfall with flowers around it.Place some lava rocks with a plastic linner to keep the weeds from popping up. Below is a photo of our waterfall.

Another suggestion on your windows> we bought privacy window screen on-line from home depo.It so nice you can see out and people can't see you.It also keeps the heat out.We did our sliding garage doors the same way.
Good luck I hope this helps you with some ideas.

Thanks for your suggestion but waterfalls means lots of maintenance to keep it nice and clean......

I have a water feature in my back yard and it is really not much trouble. Here is a picture.

Your house is amazing. You will be better off in the long run by hiring a landscape designer to draw up a master plan of the front yard. The cost will not be much at all and you will have a plan for the future.