Due to its predestined ending, certain storylines needed to play out and wrap up quicker than the writers would have liked, and characters like Jonathan, Maia and Alec would’ve gotten to take on other plotlines had Shadowhunters gotten renewed for Season 4 and beyond.
Shadowhunters managed to please its hardcore fanbase with some largely satisfying and well-developed conclusions during its extended series finale, despite the fact that its run was cut short by Freeform.