Creative members are going to search and find ways to exploit or maximize their drafts regardless if we ban GL Rings, Speed Force users etc..
My tournament encourages being creative in that form.
But if you guys want to put a ban on them, that's fine. I am more concerned on placing a Ban on characters that are Overpowered. Like Doomsday he clearly does not belong in this tournament, and would walk right through the Low Heralds.
He is OP, and makes going up against him unfair from the start by the nature of his Physical Prowess alone. Now pair him with another strong draft, and we have someone that breaks the tournament.
But drafting a GL like say Soranik Natu, and Jade are valid Low Heralds. Yet they are no more exploitable than say Terrax, or Lightray. The Power of Cosmic or the New God Tech (Mother Box) bring as much flexibility as the Green Lanterns.
In this case, we have a number of drafts that provide an even chance to play up a GL. And its not GL, New Gods, and Heralds. We have the psionics in this class (Exodus, Stryfe), Asgardians, Energy Manipulators (Classic Solar, Vulcan), Speed Force etc..
Just my two cents.