If you like the view back there and aren't concerned with privacy across the back since there is plantings already doing some coverage, I would put wrought iron or something to that effect across the back. Tie it into a wood privacy fencing on the sidelot lines. We have wood fencing 6' high around the perimeter of our yard for privacy and then have the pool area split with a 4' wrought iron type fencing to give us a play area for the rug rat yet be able to view all the landscaping and pool section from either side. Personally I think a 4' wood fence would look odd. I can dig up some pictures if you are interested.

One other maintenance related landscaping consideration is how much water fowl it might attract as it matures... mainly if you have creeks or ponds in your neighborhood. We're in the Richardson area less than a block away from a park with a normally duck-filled creek running through it. We originally had the bed along our raised pool edge planted with mostly evergreen 'Ballerina' Indian Hawthorn,'Edward Goucher' abelia, and dwarf pampas grass (that turned out to be a mis-tagged standard) which the local mallards loved for the heavy cover they provided during their February to June nesting window. Initially we loved their visits, but as many as three nesting pairs over a season more than tripled our pool chemical costs and maintenance efforts; after which, it was still tough to keep the pool clear. Also, the ducklings had a zero survival rate in our rabbit-proof backyard unless we could get them relocated in time... which never left Momma duck very happy. We've eliminated the problem (so far) by replacing the evergreens with deciduous and much less dense semi-evergreen plants. The bit of additional gardening work for the spring clean-up/pruning is tiny compared with the effort/cost of keeping a pool clean with mallards in residence. An inflatable gator kept on the pool also reduces their "house-hunting" visits, though pretty certain they would learn to ignore it if they found the surrounding foliage more appealing. The deciduous bed has been an evolving experiment since 2011, so has actually been more fun from a gardening perspective. Though I do occasionally miss the more formal look and low maintenance of the evergreens, I would never go back to them for a pool bed in a neighborhood with a significant duck population.

Molewacker, We definitely are keeping the redwoods. I love those big beautiful trees and they are part of the reason why we bought the house. In the living room we have these large, beautiful custom windows that overlook these emerald beauties along with the pool and water fountain. We actually have 4 giant redwoods in our backyard (there's two on the left side of the yard) and all of our neighbors have redwoods everywhere too. I know they aren't ideal for residential landscape but they're here and we love them so we're going to keep them unless they start to die for some reason. Then we'd have them removed right away because those things are huge and we don't want them to fall.

If you do a web search for the topic of planting near pools a recurring theme will be the need to choose kinds like bananas and palms that don't produce lots of little bits of stuff that clog filter intakes. Of course, if you get another killer winter anytime soon subtropical types like these will fail. And it's not unusual for eye opening winters to come in clusters. So what you probably need is something filtered for big parts + cold hardy. What grows natively around where you are, wherever there is any natural vegetation still present? Maybe some kind of tall growing yucca, perhaps?