This is why we cant have nice things. Cuz people complain about perfection.
Only to be limited by the scope of their current imagination since they believe succubus-level is end game.
Imagine creating a cthulu-level v-hole that warps the user's sanity when they use it. Pretty sure that would beat succubus levels.
On a more technical standpoint. If someone transported a nuclear reactor 200 years ago, they would think it would be perfected because of the "unmeasurable amount of power" it generates and seem unlimited power at their time.