I would like to have a Particle System with a UV Animation that randomizes which graphic gets rendered when the particle is created.
As of now, my Particle System w/ UV Anim looks strange because the particles change at the same time and you're always seeing the same graphic on each particle.
P.S. The effect I'm looking for is similar to a window shattering then the pieces come flying at the camera.
I wanted to know the same thing and found this question as google's first answer. Once I found something I came back.
Scroll down to 'Texture Sheet Animation Module' For what I wanted, randomised particles for an exploding unit I would create a texture with x rows, and use random row. If you want each particle type to have a decaying animation you can make the rows show how each particle should decay.
So the short answer is 'no, I haven't found a way'. But this does what I wanted so I no longer need uv access. Hope this works for you too.