Every class, by default, should be good in combat.
With the right choises, every class should be good at exploration and interaction.
Cleric: 4c, 3e, 4i
Fighter: 5c, 4e, 2i
Rogue: 3c, 3-5e, 3-5i (sum 11)
Wizard: all 1-5 (sum 11)
That would force stereotypes... all Fighters are dumb in conversation, all Rogues are jack of trades... but sometimes I want to play a diplomatic warrior or a assassin with no interest in social interaction...
That's why "Character options should allow trading skill in one pillar for skill in another."
The default for classes should be archetypal if not stereotypical.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.