Consul: A "transcendental" point of view is an impossible view from nowhere and nowhen.
Yes, impossible from nowhere and nowhen but not from everywhere and everywhen - that's obviously not a mortal perspective.
Consul: Anyway, it would be illogical if my parents said that their creating me was an act of benevolence toward me, since you cannot be benevolent toward a nonexistent or not-yet-existent person.
Sure you can, illogically pragmatic parents do it all the time: decide to have a child and then prepare for it, make sure they are in good physical and financial health to give birth to it and raise it well.
Consul: First of all, if God is a perfect being (in a state of heavenly bliss), he cannot have any unfulfilled desires
True, in Eastern philosophy they propose that the Universe is Maya, i.e, God's play or creative expression, he couldn't have been obligated to create it - but the evidence suggests that God is not perfect.
Consul: Your statement that "the amount of evil reduces as evolution progresses and civilisation reaches higher planes" sounds like wishful thinking to me, especially when I see the current political state of the world...
A few philosophers have taken this position, Teilhard de Chardin and Sri Aurobindo come to mind, but the entire Universe, not just Earth alone, is the theatre for this progressive evolution. The terrestrial evolutionary experiment may fail, as you suggested, but it won't be the last Hurrah.
Actually, I think de Chardin, with his Christian tinted bifocals, presumed that man was the crown of creation, but Aurobindo was not so pollyanna-ish, he contended that if man does not outgrow his juvenile traits, he'll be an evolutionary dead end.