The banshee, as it is, should only be on Boneyard. Just look at the accounts of the banshee killgrinders, note the maps they get the most banshee kills on (Which will always be Spire and Paradiso), and delete the banshee from those maps.
You'll also notice that an extremely small percentage of those kills come from Boneyard, because Boneyard's design does a lot better job of balancing the banshee than the mountain on Paradiso. It really is a Scorpion of the Skies, the Falcon is much more balanced.
Same idea of the Scorpion's main map being default Containment on Halo 2 matchmaking, because Containment balanced the Scorpion being a Scorpion. Waterworks also balanced it out. On Coag it was a killing machine (didn't help that it could drive up vertical cliffs)
You'll also notice that an extremely small percentage of those kills come from Boneyard, because Boneyard's design does a lot better job of balancing the banshee than the mountain on Paradiso. It really is a Scorpion of the Skies, the Falcon is much more balanced.
Same idea of the Scorpion's main map being default Containment on Halo 2 matchmaking, because Containment balanced the Scorpion being a Scorpion. Waterworks also balanced it out. On Coag it was a killing machine (didn't help that it could drive up vertical cliffs)