Hey, if it actually was +10, then 1-E would be infamous, and 3-13 even more of a nightmare than it already is.
And yet, I feel like they still didn't do nearly enough with leadership stars in FE10, since almost no bosses have them, a whole bunch of usable units get them despite how they mean nothing unless they're Ike, Elincia, Lucia, Geoffrey, Skrimir or Tibarn, and Micaiah never gets any in the entire game even though they could easily give her a star or two after she promoted to Light Sage.