I think the whole situation illustrates the tightrope that Christian religions seem to walk when it comes to a question of the extent to which a reward is tied to faithfulness.
No tightrope to it TD. You only think this way because of the WT fiction that the whole purpose of God's plan is to prove that a least a few people love him. This is tied to the "works" theology of the WT. It is not biblical.
Ps. 14: 3 They are all gone aside, they are all together become filthy: there is none that doeth good, no, not one.
Romans 3:12 They are all gone out of the way, they are together become unprofitable; there is none that doeth good, no, not one.
Is. 64: 6 But we are all as an unclean thing, and all our righteousnesses are as filthy rags;
God says that on your best day your righteousness (notice NOT your sins) are like filthy rags. Additionally, rewards are critical to Jesus' message.
All are judged ... believer and unbeliever:
...it is appointed unto men once to die, but after this the judgment: - Hebrews 9: 27
But they are not all judged at the same place or for the same reason.
At the Judgment Seat of Christ, unlike the Great White Throne Judgment, this judgment is for rewards, not condemnation. The rewards are based on how faithfully believers served Christ the King (2 Timothy 2: 4, 5). The things believers will likely be judged on are how well they obeyed the Great Commission (Matthew 28:18-20), how victorious they were overcoming sin (Romans 6:1-4), how well they controlled their tongues (James 3:1-9), etc. Speaking to born again believers, Paul makes this point clear:
If any man's work abide which he hath built thereupon, he shall receive a reward.
If any man's work shall be burned, he shall suffer loss: but he himself shall be saved; yet so as by fire. Know ye not that ye are the temple of God, and that the Spirit of God dwelleth in you? - 1 Corinthians 3: 14 - 16
So, for the born-again believer who has the spirit of God living inside him as a deposit of the full perfection to come, he might suffer loss of rewards, yet clearly he himself will still be saved. This teaching removes (well-founded) fear between man and God and paves the way for God to perfect the believer. (1 John 4:18 - Rom. 8:29) Furthermore, the Bible speaks of believers receiving crowns as rewards for different things based on how faithfully they served Christ:
an incorruptible crown - 1 Corinthians 9:25
crown of joy - Philippians 4:1
crown of rejoicing - 1 Thessalonians 2:19
crown of righteousness - 2 Timothy 4:8
crown of life - James 1:12
crown of glory - 1 Peter 5:4
hold that fast which thou hast, that no man take thy crown. - Rev. 3:11
That last scripture above indicates that believers can lose crowns (rewards); but no man can take their salvation. (Compare with John 10: 28) While the scriptures do not elaborate on exactly what the crowns entail, we can be sure that when the Creator of the universe gives a reward, it will not be a cheap gift.
So good works, while utterly insufficient to avoid punishment, do provide evidence that a person has actual faith and is born again. (James 2:18) Real works show evidence of the existence of salvation in a person, but are not the vehicle to salvation. Isn't it interesting that no where in the scriptures are people told that they should "clean up their lives" before they can get saved and then baptized? Cornelius the Roman army officer wasn't told this, the woman at the well wasn't told this, and neither was the Ethiopian eunuch. When a person tries to clean up their life "good enough" to merit life, the best they'll be able to do is to construct some sort of illusion of personal righteousness.
In short ,works provide the basis for rewards from the Lord in his Kingdom, but never for salvation.
... by the works of the law shall no flesh be justified. - Gal. 2: 16
But for a believer, working for a reward after salvation is not only right, but wise as well as biblical.