A quick thought: a comparison with modern softwares; something like
"A powerful gaming engine with user-friendly interface: streamlined rules that allow to cope with any gaming situation".
Other thoughts:
- Let no rule stand between you and your gaming pleasure.
- Novus offers you comprehensive but unobtrusive rules.
- Novus is both simple and powerful enough for beginners to grasp in no time and for veteran gamers to deal with any situation ever encountered.
Another point you might want to stress is the possibility offered to players to influence directly the course their character's action. The boons & snags is something I think you have to put forward, especially the fact that the players use them as they see fit.
I will give it some more thoughts ASAP.