Halo Reach: Adapting to Randomness.
Here's the real question; Sword Base or Reflection? Without thinking about it, I want to say sword base, but IDK.
IMO Powerhouse is great map, but was much better when it was sniper w/ 1 clip instead of the lolduckbeam.
Uncaged sucks because it's all 6 ft wide walkways, jetpack legends can win when playing with their feet, the map design just isn't good for Reach's spawn system (or probably any spawn system), and I'm sure there's plenty of other reasons listed.
Although, pretty much how good a map is in Arena is purely based on how effective abusing jetpack is.