A judge of a secret court, which are known to never deny any request?
Also, what you're describing is still infinitely better than the European system! The cops get to issue the warrants themselves.
What you are claiming about European cops is also not uniformly true. A German police officer cannot "just" self-issue a search warrant.
Yes. The more worrying situation is that Hungary can just decide that their police officers can self-issue search warrants, and then send those around the EU in the form of EIOs.