Did you edit your previous post? I thought initially you were asking about literal viewfinder blackout, as in, the viewfinder going black, which it doesn't seem to.
I agree that it would be nice for there to be actual, continual view through the viewfinder the whole time the camera was taking photos, but I don't see how what it does do would be that detrimental to your shooting. I mean, come on, complete viewfinder blackout has been present since the dawn of SLRs, and all of a sudden it's now a big deal that this camera doesn't keep a seamless, continual feed going the entire time that it's shooting?
If the viewfinder blackout that photographers have worked through for decades is really keeping you from taking good photos, I really don't think that that one thing being resolved will help you that much. This just feels like some serious splitting hairs to me. Would a continual live view during burst shooting be nice? Yes. Should it really have a material effect on your ability to take good photos? Eh, not really.