So is the whole imbalance thing just that Dark is immune to Psychic? I don't see why that's a HUGE deal, you normally want to attack with a neutral attack instead one doing half damage anyway. As in, even if Dark took half damage from Psychic instead of being immune...you'd still not want to use a Psychic move on it anyway.
Granted it might make it harder in the early game against your rival but that's about it I think. If you can't raise up another Pokemon to take on your rival's starter that's your own fault I think. Plus I would think they'd be smart enough to give you another damage move that would work so you're not stuck with ONLY moves its immune to.
But anyway, I wasn't really suggesting this, just trying to confirm rumors.
The supernatural says that if you act a certain way you might avoid suffering. But reality says you came from the stars...