The Limits of Open Theism

I think as Christians we are capable of not sinning. We have Christ who obviously stands and allows us to be free at some level. Even though we'll never be fully free if you like from the effects of sin that we can nevertheless have freedom in that way. There might be some forms of open theism. I feel like it solves more problems than it creates with respect to human suffering, our free will and our purpose to existence. It's a reasonably controversial kind of view of God's sovereignty whereby God doesn't necessarily know the future. The earth shall be full of the knowledge of the glory of the Lord as the waters cover the sea. That is not in doubt.