Challenges to Irenaean type theodicy

The concept of universal salvation is unjust
If all humans will eventually achieve perfection, how does this encourage moral behaviour in this life? If the end result is guaranteed, what is the point of pilgrimage? The concept of universal salvation appears to undermine the efforts of humans to develop their own spiritual maturity. Do human beings have the free will to refuse development into spiritual perfection or is free will limited?

Evil and suffering should not be used as tools by an omnibenevolent God
Suffering should never be used as an instrument of a…