for watching pictures i made an other zone, this gives me more control, like a playing now with all the pictures you watch in it, while the other zone still plays music.
there is no way though that you can rotate images with your remote, wich as you say is important. the mcc commands in the dev zone still say there is command but it never worked. asked several times for it, and the only time i got an answer it more or less said that there wont be a shortcut or mcc command (wich makes it easy to programm it into the remote)