4 Marvel shows that definitely won't be back for season 2
Secret Invasion
This one won't surprise you for multiple reasons. Firstly, Secret Invasion was never meant to go beyond one season. Of all the miniseries that Marvel has produced thus far, it was one of the few that actually made sense to be a one-and-done. It also had a definitive ending and brought its decades-long storyline to a close, sending Nick Fury back to space. Also, Samuel L. Jackson probably couldn't have committed to a multi-season TV series.
That said, Marvel has reportedly been going through the archives to look at their Disney Plus shows to see if any are viable for renewals. Secret Invasion season 2 wouldn't be getting the greenlight even if it was viable. The show received some of the most negative feedback Marvel has ever received, with fans loudly considering it one of the weakest MCU projects ever made.
From that shockingly pointless death early on to the panned CGI-heavy battle in the series finale, Secret Invasion left a bad taste in fans' mouths from the beginning through end. The potential was there, but its pacing issues, questionable story decisions, and underutilization of actors like Emilia Clarke and Olivia Colman made it all one big missed opportunity. And honestly, this one should have been a movie. An Avengers movie.
The show was also criticized for its $200 million budget, its AI generated opening credits, and for effectively doing more harm to the MCU than help. Though it did perform well for Disney Plus, the negative reception to it is often considered among Marvel's infamous 2023 losses (along with its cinematic underperformances), so it's highly likely that Marvel wouldn't be interested in bringing this one back for another outing.