Braves just need to get everyone back healthy and they should be alright. They have needs but not glaring needs. Shortstop really the only position that needs a significant upgrade.
Are there any decent free agent SS's available? Maybe Kim is the only one I suppose. They weren't ever going to sign Adames.
They probably are going to roll with an outfield of Harris in CF, Acuna in RF once he gets back and likely Kelenic/De La Cruz platoon in LF. Acuna might miss time at the beginning of the season, so that's a concern. Not sure they hand out a $100M contract to Teo or Santander for LF.
Rotation is fine, especially once Strider comes back. They could use another mid-rotation starter or back-end starter. Don't see them spending $75M over 3 years on an arm like Pivetta. They likely could bring back Morton on a one-year deal or maybe they sign a vet like Scherzer or Verlander. Bullpen could use another high leverage arm, but they have a solid group still with Iglesias, Jimenez, Johnson, Bummer and Lee.
Yeah they need to upgrade their bench but I'm sure they'll fill in those pieces closer to ST.
Otherwise, not much really needs to be done. They're already a team that can contend for the NL East with the core they have. Just need to add some missing pieces.