I’m gonna be honest and this is purely as a matter of taste and not about other issues pertaining to it but I think five seasons is a perfectly fine soft-limit for shows involving a continuous narrative. Stuff you can watch random episodes of like episodic conflict-of-the-week stuff, docu-series, game shows etc are different (and maybe an exception for book adaptations that use a season=book format) but like I remember when Breaking Bad ended as season 5 and people widely praised that as a show of restraint from the creators and the network because they could’ve easily milked it for two or three more seasons and the show would’ve suffered for it like has happened many times before. 2-3 seasons is way to short of a soft limit but 5 sounds fair