You cannot say it would have been better had there been no deficiency and if the good destined to reign in the end had existed from the beginning. This is not so, for perfection does not only mean good, it means the repair of deficiency. Thus if there had been no deficiency, the perfection would not have been revealed but only the good. However, the true delight of the souls is not in good but in perfection (for only when the deficiency is overcome can they rise to new levels of attainment), and this perfection is His unity, as explained above (see Opening 4).
Taste of the World to Come
Kalach Pitchei Chokhmah 49:14