Oh, and a few months ago, I was playing around. This is what came as the result :D

This made me laugh: http://www.theguardian.com/environment/2016/jun/09/seagull-turns-orange-after-falling-into-vat-of-chicken-tikka-masala I couldn't copy the picture, but it's hilarious.

Third vote for getting a professional involved, but i'll still offer my layman's suggestion given that you're just soliciting general ideas at this point. If it was my space, I'd switch the bathroom and the laundry room around, keeping just one of the walls currently enclosing the toilet. Its hard to estimate precise measurements from the drawing, so it may not be feasible, but here's what i mean

I am not sure you need to add a deck or raised paving, when there is a usable surface there already. You will have gained a closer connection to the living area, but you will be more exposed, both to neighbours and to the wind, for a significant cost. Raising the fence may break height restrictions, as mentioned, and will also really box you in visually, especially with overhead louvres. Those may feel too low over a raised area if at eave height, and if higher could look awkward against the house. The fence already shades the area alongside it, so I wouldn't extend any further shading right out to the fenceline. I would consider a shade sail before louvres, both for cost and for a lighter, less boxed in appearance. Is there access to bring in a large tree? A good sized deciduous tree positioned near the fence at the edge of the lawn may be a good way to get some attractive summer shade, autumn colour, added privacy and may be cheaper than a set of movable louvres! Below the new doors from the living area, create wide steps These could wrap around to meet the existing steps. Wide steps can become a casual seating area as well as create a connection to the existing paving, and they are less of a barrier visually than a small set of steps. They could incorporate a planter, which will help to soften an otherwise quite hard outdoor space. This would also allow the lawn to remain connected with the paved area, making it feel larger.