Given the rapidly declining state of individual privacy, when discussing these extensions it helps to be specific about the authorized agency and context. For example, these days, it's pretty much a given that NSA-type spy agencies are already getting all of whatever electronic communications they want with little friction. In the US there are certain supposed safeguards against surveilling US citizens domestically but we've already seen how quickly and easily these have been circumvented by using partner 'five eyes' agencies and commercial data brokers.
While this is obviously problematic, to me, it's even worse if domestic law enforcement agencies gain new ways to remove friction like warrant requirements or at least the need to make specific per-instance requests (which are possible to (in theory) be tracked and reviewed to detect over-use and abuse). The idea of domestic law enforcement agencies gaining access to "full take" feeds of everything enabling them to retrospectively build massive connection trees of metadata which can be searched is downright terrifying.