how about 1 or 2 gas giants and have one of them look kind of like Neptune with about 7 moons, one of which is a moon that has an atmosphere very similar to Laythe's, Kerbin's or Duna's but has incredibly strange geological features like really steep (like 10 to 50 degree inclines) and very high mountains about 2500m to 5000m for a normal mountain and give it a trademark feature near the equator. A enormous mountain that reaches almost mid-way through the atmosphere which is around 37,000m high. and lets call it Yov. i think what name suits it nicely.