Flip the blessed and cursed effects of the scroll of create monster, with the argument that if beatitude influences an object’s effects at all, blessing should amplify them and cursing should reduce them.

However, consistency along these lines conflicts somewhat with the current behavior of objects, which is that blessing generally always gives the player a better effect and cursing gives them a worse one. The create monster scroll is in a weird place because both its blessed and cursed effects could be considered beneficial in different contexts.