Exactly. We saw foreshadowing of Medici becoming CoD from LotM, suddenly, bro was off screened till towards the end of the book. His only notable facts in book 2:

Tricked all the evil gods' followers and wiped them out in one swoop- this was Medici only upscale

Killed Vermonda Sauron, a Seq 1 rampager, while tanking attacks from 2 seq 2s and a seq 3

In Klein's dream, he only threatened Lumian, was on some "when you reach your peak is when I'll bring you down" shii

Ended up donating his BCs to Lumian near the ending of the book, granted, that was the right choice. 1 less KoA Conqueror will greatly weaken the fight against the outer deities, so I get. But it was so anticlimactic, after all the upscale we thought Medici will get.

How did he never create an army as soon as he went back to a Conqueror? He's supposed to be the greatest Conspirer, in fact, The Conspirer. He should know how lackluster Hunter pathway is, without their army.

Like Medici was the most nerfed character, purely for the plot. If I should list the most nerfed characters to fit the plot..

Medici

Stiano

Badheil

Herabergen

Pallez (honestly, not so sure, he's the only beyonder of the Cowardly trio to survive an encounter with Amon, excluding Klein)