I will use this crowbar of words to move the railtracks back in place.

On a more serious note, I think the problem is "defining" tier 0. Since it seems most people, robots, tentacle monsters, and other races represented here on this forum are in agreement that tiers are class based on equal levels of optimization, and a tier 0 class does not currently exist, that seems to be the place to start.

I think a good starting place is took at classic tier 1 classes, druid, wizard, and cleric and explain how the proposed class can do anything more than these classes can to solve encounters. If it can't, it does not go above tier 1. If it can, we have to make a consensus on a breakpoint between tier 1 and tier 0 (or tier 1+ or whatever it will be called).