I'm sorry, that doesn't sound meaningful. If I don't have the energy, I'd rather shut up than have a stupid "avatar" of me yell on the internet in the name of "bringing my values" or "participate in an online discourse". I'm all for forward-looking thinking, but we must show humility. "Society's issues" are complex and deep. Those who propose internet-based solutions to troubling social ills don't often demonstrate a deep understanding of the nature of the problem. You can't plug it all with "agents"! Socrates would be rolling in his grave.
I know Silicon Valley is in a perpetual rush, but this idea needs more soak-time (3-4 years) to see if it actually holds any water. But this kind of thinking won't you get that sweet VC money.