Just getting some thoughts down.....

Interior Defensive Line
Probably one of Florida's biggest need positions considering they only secured 1 DT prospect in last year's class. Florida needs at least 3 elite prospects this class. Good news is that have 2 committed already, but they need to make some progress on the SDE position...
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Johnnie Brown 6'2, 250 LBS from FL 4* prospect with a 0.9531 rating as a DT
Committed to Florida during his February 2, 2019 unofficial visit and he has not made any visits to any other schools to date. seems pretty solid at this point.

Gervon Dexter 6'6, 276 LBS from FL 4* prospect with a 0.9486 rating as a DT

Committed to Florida in November 2018 and made an unofficial visit to Florida in February 2, 2019. He has not made any other visits since he committed to Florida, but he has received offers from Alabama, A&M and Miami.

Zykeivous Walker 6'4, 255 LBS from GA 4* prospect with a 0.9449 rating as a SDE

Lots of activity going on here. He has unofficially visited to Florida, Clemson, Alabama, Georgia (2), Tennessee, and recently received a visit from Muschamp (SC). Florida is going to have to put in some work to get him back on campus.

Linebacker / Rush End
Florida has a lot of talent lined up for the Rush position and this past recruiting cycle secured some solid talent at linebacker, but given that the heard of a defense in the SEC is the front 7, you always need to sure elite talent! Florida needs at least 2 elite linebackers and 1 elite rush/DE.
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Sav'ell Smalls 6'3, 230 LBS from WA 5* prospect with a 0.9975 rating as a OLB
He recently listed his Top 12 (which included Florida) but has a long list of elite schools. He has made unofficial visits to Washington, Oregon, Florida State, Florida, Sandford, UCLA, USC, and Alabama. Given that he is on the west coast, Florida is going to be at a disadvantage because visits are going to be hard to come by.

Fadil Diggs 6'4, 225 LBS from NJ 4* prospect with a 0.9491 rating as a WDE/RUSH

He has made unofficial visits to Maryland, Virginia Tech, Penn State (2) and Ohio State, so Florida is going to have some work to do get this recruit on campus.

Chantz Williams 6'3, 221 LBS from FL 4* prospect with a 0.9463 rating as WDE/RUSH

He has 3 unofficial visits to Florida, most recently in February 2018. However, he has also visited Miami (5 times, all before coaching change) and Florida State (3) and LSU (1).

Brandon Williams 6'3, 220 LBS from LA 4* prospect with a 0.9086 rating as an OLB

He has 2 unofficial visits to Tennessee and LSU, and 1 visit to Alabama. Florida is going to need to get him on campus quickly to have a real chance of landing him.

Morven Joseph 6'3, 210 LBS from FL 3* prospect with a 0.8739 rating as a WDE/RUSH

This Florida commit had his only unofficial visit on February 2, 2019 and committed a week later.

Josh Griffis 6'4, 230 LBS from FL 3* prospect with a 0.8577 rating as a WDE/RUSH

This one-time Florida commit (decommitted - 2/20/2019) appears to be more in love with Florida than they are with him. Griffis was a hold over commitment from the prior staff (9/2017) and while he has visited the campus 5 times since the new staff has been on board, the "love" just does not seem to be there from the staff and Griffis has stated as much in interviews.
Secondary
With defensive backs, it is hard to know where they will end up, so best to just group them together. Having said that, Florida will have a need for Safeties this class and less of a need for pure corners, especially given the recruits they landed in the 2019 class.
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Fred Davis 6'1, 182 LBS from FL 4* prospect with a 0.9811 rating as a CB
He has taken 2 unofficial visits to Florida, one in October 2018 for the LSU game and the other in April of 2018. He also took an unofficial to Clemson in January. He has also taken 2 unofficial visits to Miami, but not since the coaching change.

Rashad Terrence II 6'0, 195 LBS from GA 4* prospect with a 0.8963 rating as a S

This Florida Commit took 2 unofficial visits to Clemson in September and October. He also took 2 unofficial visits to Tennessee in November. But it took just 1 unofficial visit to Florida in December to secure commitment. Since then, he has made a second unofficial visit to Florida in February and has not made any other visits to other schools since his commitment.

Ethan Pouncey 6'1, 160 LBS from FL 3* prospect with a 0.8333 rating as a CB

He has offers from FSU, Auburn, Alabama and Georgia, but his only visit thus far was been to Florida on February 2, 2019.