What PC class should a well-designed ruler have?

[Rleonardh]

Well if he is a Frontliner than he limited to light armor if going bard. With that being said bard definitely has some good things going for it.

Cleric with plant domain let's you be a neutral cleric that can go all the way from chaotic good to chaotic neutral in alignment which is a great chunk of population.

Bard if archery
Cleric if melee

Ehlonna can do plant and celerity domains
Celerity has haste btw.