You're assuming an awful lot about Aeneas as well. He does believe in war etc, but not for bloodlust and that seemed the apparent difference between Caspius and Aeneas. He's also seen the CoI fall before and is hellbend to ensure it doesn't happen again. The political atmosphere which was left to Aeneas is difficult and needs to be handled first before the CoS wishes to accomplish greatness again.
I knew Aeneas, so that's hardly assuming anything: it's more or less anecdotal evidence.
Greatness is accomplished through war and triumph in the name of Sartan. It is no accomplished by standing idly by and letting the Adghar faith be reborn in one's own lands
