An observation regarding inyeraction between Eternal Royal and Lunatic Lancer: to keep the soul spear going, LL wants to avoid refreshing maneuvers. ER, on average, has trouble keeping maneuvers expended--you can hit a bad streak, but most times that won't be an issue.
Since ER is the class that explicitly gets to sub Septette (and its cleave replacement feat) in, it might help to be able to NOT roll to refresh. Otherwise you need several rounds' prep to use the whole thing of Lunatic Lancer for more than a round.