There was a time at the federal level when you could only serve a search warrant between dawn and dusk unless you specified why a night warrant was needed. That morphed into the no knock warrant. In an of themselves, they serve a specific valid purpose, not so much safety of officers, but to stop any destruction of evidence i.e. drugs flushed or betting slips destroyed. Today the betting slips are thing of past. Now it would be computer records. Have they been abused, absolutely. Just like with the FISA warrants, a decent idea becomes stretched to extremes by any oppressive government agency. To ban them entirely may be a mistake but something definitely needs be done because throwing the baby out with the bath water is never a good idea. As far as the equally oppressive seizure laws, they need to go unless there is a court rendered verdict for such. For clarity, no knock warrants are distinct from warrentless entry necessitated under exigent circumstances.
No. Ban no-knock warrants now. Figure out what, or even if, to replace them later - at leisure, with a full country-wide debate.