For God to Universally save everyone, there is no Gospel, no Mission, no Church, no Pentecost. If he "willed" it to be done, it would be done. No plan, no good news --- the reality is.... it's like saying can he create a rock too heavy to lift... he can't. He made us to have a choice. He's made it hard to refuse. He's made it difficult to turn down. He's drowned us in a sea of Grace when he shows up, but it can still be refused. It's the very nature and law of His own creation. It's that vulnerable flaw that gives it beauty --- life, instead of plastic reproduction.
But He's done all the work. He just asks us to rest, trust and believe in Him. Not a bad deal