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I think Olave/Adams is a much better combo than Olave/Shaheed even if that is the case. Adams will almost certainly be the better option on short to intermediate routes with his route running plus contested catch ability, and if protection is an issue Carr will not always have the luxury of time to wait for Shaheed to get behind the defense.
The Saints did play more 11 personnel against the Falcons, with 28 snaps (39%). We were pass heavy in 11 personnel, passing 86% of the time (80% of the time if you exclude third down). We ran 67% of the time in all other personnel groups.
I don't disagree that Olave/Adams is a much better duo than Olave/Shaheed. But I don't think this OL is going to hold up in 11 personnel. They didn't against Atlanta. I saw a stat that Carr had like 2.3 seconds to throw and a lot of that could because of the increased use of 11. Anyway, while Adams would certainly be an improvement, I think it's a marginal improvement that wouldn't turn this team into a Super Bowl contender. Maybe it helps with the division, but I'm not sure one push for a Division title is worth the future cap implications, draft pick cost, or the fact that it likely leads to having to let AK go.
I also don't know how you pay a 32 year-old Adams who has 3 years left on his deal while refusing to extend Kamara. While it would be nice to have 3 good WRs, Kamara is the ONLY RB we have that is better than just a guy. It's just inconsistent with their current level of cap restraint and a pretty sheetty way to treat Kamara who is still a great RB. Adams is just as likely, if not more likely to decline in the next 3 years as Kamara is.