-1
For any kind of reasonable defibrillator use, it requires ragdolls. And ragdolls not only lag the server, but when you start getting into 128 player counts (which is already painful to the source engine), you start getting some big issues, not to mention the heavy scripts that operate way too frequently (as per the old one we had), and relative datedness of most defib addons.
While the idea is good for roleplay, sure, the actual implementation just will not be good.