Ah, also. Randomizing Rennac just killed my run : I my only access to promotion items was through the secret shop, but Rennac starts without the secret shop card. GG WP would do a run with only basic units again.
Just a heads up : opening up guide>allies and selecting one of the first 3 options change the 1rst skill of every character. I guess it stores a value somewhere for "this guide was read", and thus mess up with the randomization? perhaps.