There’s already a thread (or three) for this discussion, and CCP have already talked about this. They’re not going to touch Local without a pretty significant rework of intel and possibly cloaking as well.
Besides that you’ve missed the flip side of this, which is while local makes it easier to react it also makes it immensely easier to hunt someone. It’s incredibly easy to miss someone entirely given current mechanics if you’re just roaming through looking for targets, and very time consuming to verify that a system is empty.
So no, removing local doesn’t just make space more dangerous, it completely changes both sides of the dynamic, and it’s absolutely not something CCP should do in a rush in response to ranty, grammatically questionable forum posts.