Honestly..any semi-decent writer would've done wonders with all of these characters and so much more and I stand by that so fully.

(Minus Todo and Mai and Kamo cause Gege kinda cooked with those 3 but I stand by it).

Hell,any semi-decent writer would've done much more with the lore and Worldbuilding of the series and essay any of the plotlines.

There is no such thing as a fully bad character, just wasted characters and that's cause of writers not knowing or wanting to do anything with them.

Literally all of these characters had Potential for more that any semi-decent writer or even a above average writer would've done something with and I don't wanna hear "oh what could Gege have done with them".

Gege's a creative guy, he could've done something. He could've fleshed out his lore and Worldbuilding, he could've fleshed out his cast and certain dynamics.

He'd not full on incapable of doing so.