Ah no, allowing them to see Heaven and then giving them an eternal torchure is what would make tourchure worse. Them knowng what heaven is and never being able to acheave it...
Then the pain and torment is bigger. If they never knew Heaven at any point, then they wouldnt know any better than sufering, so the torment will not have the sam effect, will it? How can you miss and greave for something you never knew or expreianced.