What are the Characteristics of a NT Christian?

[SteveII]

Do you not see that by establishing free will, God has decided not to controlling the result? Your question is literally asking why can't God control people with free will. Your mention of an angelic rebellion undermines your own complaint. Some angels--despite direct knowledge and access to God, exercised their free will and rebelled, yet you would have us believe that it is likely that God (if he exists) could create free will humans without the direct knowledge and access the angels had and we would always choose good.

So how is heaven going to be perfect again?

I think that the continuous physical presence of God will be a powerful enough force to overwhelm any desire not to live a holy life (that's the view that I think most persuasive).