Baltimore and Cinci still need teams around Jackson (they only went 6-7 with Jackson in 2025) and Burrow. There's a reason Burrow and Jackson rarely make it through 17 games. Cinci haven't done much to improve the defence and Oline, and Baltimore lost their best Olineman (albeit they did draft the most highly rated guard), and have probably made only marginal improvement to their D. I would consider Cleveland to be a bit of a dark horse. They already have a very good defence and they had a good offensive draft. If Todd Moncken can find a way to rejuvenate DeShaun Watson (or get something out of one of the ragtag band of drafted quarterbacks), they could be a lot better than in 2025.
I'm also not sure how you can say that schedule doesn't look favourable. AFC North, AFC South and NFC South - it doesn't get much more favourable than that. Even with roster updates, I don't see NFC South moving much out of the cellar. And AFC South, I think Indy and Jacksonville actually outperformed in 2025 and will return to the mean. As for AFC North, like I said, I think Baltimore's and Cincinatti's 2025 deficiencies haven't been fully addressed, only moderated. The real barrier to Steelers success is whether the new coaching staff will bring the schemes, player development and the changed mindset, and the personnel updates bring the skills, for the Steelers to overcome their own deficiencies.