What you argue doesn't change the underlying nature of the problem with Heaven, Mockingbird. If a perfect existence is possible without suffering, that begs the question of why God would make anyone go through the worldly charade, in the first place. And if a perfect existence is <i>not</i> possible without suffering, then Heaven is impossible. Its nature doesn't really factor into this. If Futurama or Bruce Almighty's take is true, then Heaven would be inferior to this world, as it would involve everyone realizing that God was real (which, according to them, shouldn't happen); and that's a difficult proposal to defend.
The fact remains that omnitheistic views (the ones that accept an all-powerful, benevolent god) can only retreat to ignorance on this matter; there's no discernible reason why it should be this way, but there has to be one. Conversely, if you accept no god (or, say, a god with limited power, one that was uninterested in humanity, multiple equally powerful and warring gods, or the like) reality starts to make <i>perfect</i> sense, without any appeals to unknown explanations required.