Greetings Holdem. Permit me to offer that some perspectives on reality give the view that heaven is more like a state of being than a place. Obviously, this heaven is more about concern with what is within one's self than about what is within others. It is potential for any human. Another way to describe it is realization of union with God and entering the Kingdom of God that is within. From this perspective, one must take care about what is created internally from one's actions; each action has an immediate consequence within of more or less importance depending upon the action..... So does God either let non-Christians into heaven or does he give some a MUCH better chance than others? I don't see any other way around it .
Regards,
a.1