Has anyone tried playing with 7 players? I'm thinking that 5 Devotees and 2 Nemeses should be okay.
A bit of a necroposting, but still - yes, we played several games with such setup and it proved to be quite balanced, except for the Slaanesh daemonette Nemesis(she gains infamy for corruption cards and points of influence players have, so more players means more infamy).
Just tested an idea to speed the game up, instead of skipping levels at the beginning change the trophy number required to progress up a level and make it the same as the level required. E.G. at the start you need just 1 trophy point (the first victory!) to get to level 1 then 2 trophy points for level 2. By level 11 the average value would be 6. It makes it easy when you are weak and harder when you are strong. If your character starts with 1 high attribute (like Ogryn) he can win battles but loses out on trophy points as they will be wasted. The start of the game was a lot more fun.
That's a nice idea actually! We usually used these rules for blitz games:
1) 5 trophy points for level up (your idea looks better)
2) 2 completed missions for a Relic(instead of 3)
3) starting level is 3-4 for characters and 2-3 for Nemeses.
4) starting Influence is increased to 6 pts