I don't see a warrant as sufficient.   The bar for these powers needs to be set very high and Canada needs to have better defensive measures to prevent the need to use this legislation as much as possible.

What I've seen over the past few years is shocking.   Accomplished lawyers who are strong human rights advocates dying young of "mysterious causes", among other things.   There are people who need very powerful disincentives to prevent them from using the law for their own purposes.