Okay. I'm going with a not-unlimited budget here..
After I stopped jumping around for joy... I would make it an open-top NPT and add dozens of ammonia-sink stem plants/floaters. Then, when the soil was settled, I'd replace a few of those stems with a lot of mosses, some really lush red lotuses and attractive emergent plants, and probably some reeds. Add some nice twists of Malaysian driftwood, add peacock moss to those ... and then stock it with.. let's see:
- A whole pile of high grade cherry shrimp.
- Some interesting fish which do not prefer to snack on said shrimp.
- A shoal of panda corys
- Some dwarf gouramis
(if I lived in America and thus could actually get one.. and I'd maybe ditch the open-top idea)
- An Amazonian biotope with a single Brandt's Piranha.