In some... odd, strange way, the Orbs remind me of the Chaos Emeralds from Sonic the Hedgehog. I mean, read this quote about the Emeralds:
ORIGINAL: Tikal, from Sonic Adventure/Knuckles the Echidna from Sonic Adventure 2
The Controllers are the Seven Chaos.
Chaos is power, power is enriched by the Heart.
The Controller is the one that unifies the Chaos.
If one were to think of the Creation Orb being the "Master Emerald", this could make sense. (Noted, there is 8 orbs, but you know what I mean) It is also likely that, although the power of the Creation orb unites the Orbs, the Creation Orb could likely control them, (like the ME can neutralize the Chaos Emeralds) which makes poetic sense. (Would there be elements if there was no Creation?)
Also, the Master Emerald has been shattered several times, like the Creation Orb was. Not to mention, Tralin was chosen to guard the Orb by Lorithia, like Knuckles was the Emerald by the Gods...
Like I said, a strange, off the wall parralel... even if it wasn't intentional.