They've done enough. By replacing Walker/Phillips with Luzardo/Painter they saved the bullpen 30-60 IP plus added 5 wins over last season, so a regression would be from a 100 win baseline. That's a nice cushion going into the season.
The biggest worry is the lack of SS prospects in the system, only Rincon is viable, and he's got a lot of risk. Saliltban is already at 2B.
Who is their 2025 LA target?
They're going to have to add a couple SS prospects the next year or two, Turner ain't staying there indefinitely and Miller will probably lose too much range as he fills out to stay there past 25 or so.