The concept of self-healing is a bit weird for me. Surely you want to investigate the cause before it heals?

Funny that we have tools like tripwire which have the opposite idea of the world.

My dream would be to have both functionalities in a single tool.

Bidirectionality! If you solve a problem on one machine you could pull that fix then push the same fix out to other machines as a preventative measure.

Some mix of git/osquery/augeas could do this.