On Advance Server, Moonton did a pretty bad nerf on Natalia. As already mentioned, later one of the most feared Assassins will lose its passive effect, silence. Even so, what has made Natalia fearful is this effect, because she can easily kill enemy cores without any resistance.
However, it seems that now Natalia is no longer feared and may even be ignored. As long as you don't have silence Natalia is not a significant threat. Even though Natalia can still disappear and be given additional damage when she ambushes, the opponent can easily escape and provide resistance.
Whether Natalia is used or not, surely Moonton has thought of a lot of nerf-related things that were done to Natalia. It is possible that new gameplay will be presented through this Hero. We'll just wait until it comes to the next patch.