Most subs have limits and you have to know the limits of that sub. Aren't we technically all openminded since we're into BDSM? By the way you've been talking your idea of open minded seems to be along the lines of TPE (Total Power Exchange) where the sub gives up her safe words and puts her trust completely into the Dom.
Personally, I think the way you play isn't SSC. I think that you're being dishonest with your submissives and possibly abusing them with your "trickery." I can't say for sure because I don't know your submissives, nor do I know you. We subs put a lot of trust into our Doms and if you're going through submissives like a fat kid goes through cake, well, something isn't right there.
And I agree with Tessa, we're not flaming. We're giving our honest opinions and treating you with respect.