Looks like the palm tree look is working so I would blend that with some succulents maybe agave which can grow large and make great statement plants. Also stick with the stones.

Well that is an interesting picture. I can assure you that hanging wall gardens are all the rage and that is a great idea but they can also be high maintenance if exposed to high winds / sunshine etc. I have seen some lovely fake ones that would do just as well. You could also have a few pots with additional greenery. As you say your view is not "great" maybe you can have a creeper in one of the pots that can weave its way through the railing. I probably wouldn't go for one big chair as it could dominate the entire space. I would consider a table with a couple of fold-able chairs .... something that is comfortable, inviting if you have friends over but can be placed in a corner if you just want to open up the space. I do not think you need a carpet and but maybe some fancy outdoor tiles will look just as nice. You want it to be easy care and weather proof. Do you need or wish to incorporate a washing line? A pull out one from a wall will be perfect that way you can retract it back when you are not using it. If you deck gets too much sun, you may want to consider some shade shutters. I have seen them called 'plantation' shutters. GOOD LUCK

Ouch, Lancewood! Nice read, FORM :)

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.