I get your point, but linear swimming space is very important to tangs. Having to constantly turn around isn't natural for them. That being said, if you MUST get a tang (which I don't recommend) get a bristletooth, preferably a Tomini. They are very pretty and stay small.
There are lots of other "centerpiece fish" options out there too. I know a lot of people are drawn to tangs because they're active, attractive, and reef safe. There are a couple reef butterflies and dwarf angel species you could also consider.