I joined legion for the beasts and love them the most. I was wondering what forces would give this list trouble.
rapport and assassinations. all day every day. =)
Fury 5 will slow you down, and 2 Carniveans are expensive. Maybe swap out a Carnivean for a Scythean and Forsaken, if you want to keep that style of list.
Others can give you better advice than I can, though...
Menoth: 215 pts.
Legion: 185 pts.
Mercs: 16 pts.
Minions: 65 pts.
Models I've actually painted myself: 7
Yeah, Rhyas generally isn't a beast 'lock, so that seems to be an issue here. I don't play her though, so I can't say how well it will or won't work. If you run it, let us know!
Read all about it at Sustained Attack!