You don't know what God knows. This is like a person saying, if I was in that situation, I would do this and such. Nobody knows what we would do unless we were in that situation. God did engineer the universe to be without suffering for humans, but he gave us free will to ruin that. That is the free will defense.
I understand his plan to be that as intelligent beings with personhood status like himself, we can use our knowledge while on this world to better life for ourselves, love others and love him and that works, meaning that gives fulfillment to many millions when they do that.
How in the world do you know what I know? Besides that, how in the world do you even start to think you know what God knows? You don't know what either one of us know.
And you're wrong. I certainly can say what I'd do if I were God in a particular situation. If I were God I'd never order any human to murder another. If I were God, I wouldn't send people to a Hell of eternal torture simply for being confused. If I were God, I wouldn't condone War of any kind, and I would use my Godly powers to restrict anyone from attaching my name to a War or to any politically-motivated agenda.
There's a lot of others things I would do if I were God, and I don't have to be in a particular situation to consider what my actions might be. We, as humans, have the ability to think hypothetically. And I know exactly what to expect of God in certain situations based on the attributes and characteristics ascribed to him.
Many Christians say that God is lawful and just, but then they claim the Bible is the infallible word of God, an instrument that tells His story, and it contains sections where God orders innocent people, such as women, children and servants at Jericho, to be murdered. It also claims that God ordered surrendering soldiers and those attempting to flee the battle be massacred.
I may not know what God will do in every situation, but I damn sure know what He'll do in very specific situations, that is, if He wants to keep his holy arse consistent.