John Mann would it have been impossible for God to create a world with free will, but without suffering? If you say that would be impossible it does seem to set a limit on God. As if the universe consists of laws which have priority and constrain God's action. That's one reason I don't like the free will argument.
For me an answer to problem of evil is that there may be an answer we don't know yet or that we can't understand. There is far too little humility in discussion of these issues. Some atheists seem to have such supreme confidence in the human mind, or their own minds in particular, that if they can't see an answer to the problem of evil that therefore means there is no answer. How arrogant is that?
We can readily accept that a dog can't do calculus, most of us don't understand quantum mechanics, and our brains are not designed to think in more than three dimensions. Yet when it comes to whether a supreme being might know something about reality and the nature of evil that we don't understand, the idea is dismissed out of hand. Why?