(justifying his god's actions as regards Adam and Eve)

I disagree. Since the consequences of evil effectively destroy paradise in any case the post paradisal state is instigated by human decision. It is demonstrated that if humans establish themselves as the ultimate authority paradise ceases to exist. what you are therefore proposing is the abolition of consequence.

That said God wishes eventual restoration hence the eventual return to heaven where humanity walks once again with God. If that is what we want.

God's only punishment then need only constitute endorsing the consequence of human decision and action.

Enhanced punishment, if we cannot discount it, serves the purpose of deterrence.