>>19312347anime has been dead for 10 years now
like why even bother watching a show if you know it's just going to end after 10 episodes with characterisation as deep as a puddle
just compare that to Legend of the Galactic Heroes where pretty much every single character has a chance to shine
And even in gacha like blue archive you have side stories momotalks and so forth which alone destroy the average anime in characterisation, it's no wonder that most doujin artists would hop on that
it's not 2005 anymore where the situation was so desperate that we needed doujin makers to come up with their own fanfic because all we had was the shit that was going in the tv