The San Francisco 49ers confirmed their initial 53-man roster for the 2024 season and, while plenty is subject to change following the deadline for teams to make waiver claims, there is a lot that can be taken away from the composition of this year's vintage for the Niners.

San Francisco made some surprising decisions in getting its roster down to 53, going, at least for the time being, light at both tight end and tackle.

Yet the three biggest takeaways following Tuesday's cutdown day and the waiver deadline coming and going concern areas of the roster that have traditionally been considered among the 49ers' deepest.

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There is too much pressure on the starting defensive line

One of the issues with the 49ers' roster that has only been more magnified by the preseason is a lack of depth on the defensive line.

Injuries to edge rushers Leonard Floyd and Yetur Gross-Matos, with the latter seemingly more severe, served to exacerbate concerns over the 49ers' options up front, which had already been made less plentiful by a knee injury to defensive tackle Kalia Davis, who is set to miss half of the season after undergoing surgery.

San Francisco is carrying nine defensive linemen, but backup edge rushers Robert Beal Jr. and Sam Okuayinonu did not show enough in preseason to suggest they can be relied on consistently. Similarly, while Kevin Givens and Jordan Elliott are experienced defensive tackles who can eat up snaps, neither is regarded as a hugely disruptive force on the interior.

In previous years, the 49ers have been able to win by throwing waves of pass rushers at opposing offenses. Beyond the versatile Gross-Matos, success up front this year appears to hinge squarely on the front four of Nick Bosa, Javon Hargrave, Maliek Collins and Floyd.

That is an excellent group in which to be placing faith, but there is a strong case to be made there is too much pressure on them to deliver and not enough in the form of support from those further down the depth chart.

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Kyle Shanahan is poised to coach his best ever WR corps

This claim is entirely contingent on the 49ers finding a way to get Brandon Aiyuk on the field, either with a contract extension or playing on his fifth-year option.

That is far from a guarantee but, for the sake of argument, let's say it happens.

It's still a big claim to make given Shanahan has coached the likes of Andre Johnson and Julio Jones in his career as a coordinator.

But in terms of sheer depth of talent, this would be the best group with which he has worked.

Aiyuk has blossomed into the one of the league's premier wideouts and Deebo Samuel is still arguably the NFL's most diverse and dynamic playmaker. Behind that pair the 49ers have a number three in Jauan Jennings who would be a number two in a lot of offenses around the league, with Jennings a player who consistently delivers in the clutch as he did in the Super Bowl.

When healthy, first-round pick Ricky Pearsall has the potential to develop into a top-tier separation artist at the highest level, while fourth-round rookie Jacob Cowing has already demonstrated the promise he has in preseason as a gifted route-runner who can also win with speed.

Throw in a veteran in Chris Conley who made some huge plays in the postseason last year and would likely be a decent fourth option for many teams, and it's difficult to disagree that the 49ers are working with an unmatched embarrassment of riches at wideout.

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The 49ers are already ready for life after Dre Greenlaw

It was no surprise that Dre Greenlaw was placed on the PUP list to start the season as the linebacker continues his recovery from the torn Achilles he suffered in Super Bowl 58.

Greenlaw's availability for this campaign is unclear. With the linebacker heading into the final year of his contract with the 49ers, it's easy to see San Francisco being unwilling to give him the new deal he might be desire coming off a serious injury in a 2025 offseason in which then Niners will likely make Brock Purdy an extremely rich man.

But the linebackers who join Fred Warner on the active roster for the start of the 2024 season give hope that the Niners are well prepared for life after Greenlaw, should he and San Francisco indeed part ways.

Former All-Pro De'Vondre Campbell will play Greenlaw's WILL linebacker role but is likely only a one-year stopgap. Demetrius Flannigan-Fowles may play SAM linebacker on base downs in Greenlaw's absence, but the longtime special teamer is unlikely to be considered a long-term starter.

Further down the depth chart, however, the 49ers have three intriguing post-Greenlaw possibilities in 2023 sixth-round pick Dee Winters, 2024 seventh-round pick Tatum Bethune and Curtis Robinson, a Stanford product who scrapped his way onto the active roster after several years bouncing on and off the practice squad. 

All three play fast and physical and do an excellent job of getting downhill to close to the football. Winters has the athletic gifts most suited to matching what Greenlaw does in pass coverage, but all three are young enough and have the talent to have long-term roles either at WILL next to Warner, or as a SAM backer.

With the torch passed from Patrick Willis and NaVorro Bowman to Warner and Greenlaw, the 49ers have an outstanding history at linebacker. The takeaway from this year's depth chart is that the future is very bright.

San Francisco 49ers practice squad tracker: Keeping tabs of all the additions to the 17-man group

It will play a big role in their 2024 hopes.