Love your edge tile color!! And the great contrast between it and the coping. Nice.
10' would make a nice deck, for sure. There are many threads here that reference amount of deck. Nobody ever complains about having too much deck, but the opposite is often the case. Then a nice row of landscaping behind it and the pool, all the way along the fence, maybe? I'd want something tallish, to help fade the houses and street behind. Evergreen, if possible. But something that won't shed a lot of leaves and such into the pool on a windy day.
You could have some very nice landscaping lighting all along that fence, too, that would look fantastic. Up lights that shine through the plants. If that's not in the budget, you might have the deck contractor bury a conduit from some outlet by the house under the deck to one side of your pool or the other, so that there's a path for the wiring. That way you can fish wire through it later. If the concrete covers the pathway between house and pool, you won't be able to do it later. That should be a minor expense. You could even do it yourself with some electrical conduit from Lowes or HD.
Be sure there's a plan for drip irrigation, too. That's a little detail a deck contractor might overlook. There needs to be a path from your water source to where all the plants are going to be, before the deck goes down. Just giving you some topics you can discuss with the architect.
Pardon me for asking... What's the plan for that one corner where the tile doesn't align? Or am I seeing things? That's unfortunate. Is that third tile to the right shorter than the others, to allow the corner to align? If so, they missed. That's not OK. They need to bust out all three of those tiles and do it right. Don't let them "glue" on a little sliver of tile. That won't hold up to foot traffic and won't look right. Did you end up with any extra tiles? That's not acceptable workmanship, IMO, if the corner is off by an 1"...