(Nods) Yeah, are you suggesting I add the celestial or fiendish or something template?

At a push, I could make it every sixth level, but then it feels pretty weak. I miscounted. O_o
Every fifth level would be five companions. Starting, plus 5, 10, 15 and 20. To push it down any lower, it'd have to be every seventh level, meaning only three companions. What could I do to balance that?