Hello Andori,
I wanted to increase the difficulty of legends 7, 8, 9 and 10 (Irja didn't do that enough) so, this is what i did: always if you have to place two or three gors, place a skral in last space. The skrals have the same values as they have in andor, and the heroes receive 4 WP, gold, fame or a combination. I did only test this with 4 heroes but I think this doesn't matter anything.
Have fun
(You can awnser in german, I'll translate )