First of all, yes, should Monero survive a government attack it would become 100x larger and more powerful than it ever was before. 
 
Secondly, yes, quantum computers scare me some.  Do you (or anyone) know if abelian surface cryptography is any more resistant to quantum computing than the 2D equivalent?  I am referring to taking the elliptic cruve and extending it into three dimensions so it becomes an 'elliptic bulb' (though more complex shapes are likely possible once there).  The point-and-line which is used to create the trapdoor function as it bounces around the curve would then become a line-and-plane bouncing around inside a 3D surface and creating an orders-of-magnitude harder to crack trapdoor function.  This is especially true if the line that is bouncing around features things like rotation and velocity.