Smaller submarine threat, much larger Air and "coastal artillery" missile threat.
Knowing the German Navy? None. At best you would see 1x AAW frigate for every 2 ASW/GP frigates.
That's assuming that the various Corvettes don't need any coverage, since all the K130s have for AA is a pair of RAM launchers!
If you're building a GP FF, you need most of what used to be the standard for an AAW FF these days. The floor for minimum capability has risen greatly! The ship Germany is replacing has space for 16x Mk41 cells. 64x ESSMs.
64x ESSM is great, till someone starts throwing hypersonics at you. Now you need SM6s. Which means something like 16 cells that are Strike Length, in addition to the 16 cells for ESSMs. In your GP/ASW frigate.