Any provision related to gun ownership and mental health that goes beyond what currently exists will be abused. To think otherwise is to trust politicians, legislators and the various legal administrators including law enforcement in general. "Give them an inch and they'll take a mile" comes into play.
Additionally, trusting an entity as subjective and umbilical-cord connected to government as the psychiatric industry, the author of standards and evaluations, raises questions about the mental health of that very trusting person.
On the surface it all sounds good. Nobody wants mentally ill individuals to possess or use guns. But the more dangerous thing about the mental health card being ramped up to in order to get these mass shootings under control is the use of the psyche industry and its moronic tool of subjectivity applied to the 1st and 2nd Amendments.
A "new and robust" mental health evaluation related with gun purchase and ownership won't stop there. History knows it. Next, a federally-mandated mental health evaluation will be required to simply exist in the U.S..
Your federally-mandated mental health evaluation will depend more largely upon what you say - or have said, easily obtained through social media posts. Provisions will undoubtedly be made for neighbors, co-workers and relatives to chime in with juicy gossip as to their opinion of you - and your mental stability. Your political and religious views will not go unnoticed during the evaluation. Would a "Sermon on the Mount" Jesus pass a mental health evaluation? or a locust and honey-eating John-the-Baptist pass the test? or a prophetic Elijah?? The psychiatric community is not exactly appreciative of fundamental Christianity in case you haven't noticed.
It has all the potential of an old Soviet Union State where the KGB weeds out dissenters and free-thinkers who resist government and or complain about the status quo.