I guess I should post one of these too.
I probably never stood a chance as a replacement player when alliances had ample time to firm up. That seems to bear out what Austria has said, and the play in the game up until I was eliminated. I don't think my playing was anything to be desired/imitated, but I'll comfort myself in the fact that Austria and Russia did not win after they dissembled me.
I found the seismic phase to be useful primarily in defensive orientation, as I never got far enough off the ground to launch any serious offensive actions, and I think I did that rather effectively.