It's well known that personal skills... suck, at least on most characters.
For example, you can see the stewards difference over engage and Fate.
Fates: +15 hit and +3 damage, +2 damage and defense, +15 avoid and + 3 defense.
Engage: +10 hit, +10 avoid, +5 crit
Honestly I think the reason for this is because IS wants a wide audience that isn't known for reading every single skill of every character I've taught this game to some friends who are not dedicated to playing FE or tactical games, and I see that despite giving them the notice, no one stops to see what personal skill each of the characters has.
However, what I want to propose is, which skills would you change? And what changes would you make?