If you want discs that are designed and produced to be as flat as possible, get some MVP/Axiom. Many of their molds are very flat.
You want a flat Destroyer? They're out there. Not sure why you'd want one when the domey ones are way better but whatever. Rocs aren't flat unless you get one with a flat top. That's always the way it's been, so I'm not sure why there should be an uproar now. The Teebird isn't naturally the flattest disc, even if there have been a couple of very flat runs. It's not a board flat mold. Unless it's a T3 which has been tweaked to be board flat. Leopards aren't board flat either, nor should they be.
So I'm not really sure what you're expecting. Every manufacturer produces discs with a variance in dominess. Every. Single. Manufacturer. Why single out Innova, unless you want to engage in a little senseless anti-Innova circle jerk and whine about the big bad Corporation on the internet. Innova is still a small business, and they put out classic molds in plastics people like.
If you don't like them, throw something else, like an Envy or Resistor. Or bitch about it on the internet meaninglessly. The choice is yours.