I have to offer one correction: I know the football delays are very annoying to deal with, but they actually HELP ratings. Football is still the most popular program on television, and when CBS gets the late game, all the evening shows get a boost, with the exception of the 10 PM show which is often bumped out of primetime. It's not a huge boost, mind you, but as someone who has followed the ratings industry for years, it was always noticeable the bumps that either CBS or Fox would get whenever they have the late game.
I think the best cancellation possibility is a show God Friended Me, Sundays at 8. Their other new shows are a reboot of Magnum PI, and a procedural FBI, both of which are right in CBS's yawn-inducing crime wheelhouse.
Personally, I dont see it airing in the fall. Networks are generally a bit more reluctant to pull new shows so quickly these days. I really think TAR31 will fill the same slot as TAR30. Especially when you consider the season has the reality show theme, airing in Survivor's slot makes too much sense, especially given last years favorable results.
If it's true that season 32 is filming this fall, I think we'll see season 31 in January/Feb, and then season 32 will air next summer, likely paired up with BB on the schedule. That would be a fun schedule for the next couple years, and I'd welcome it.