D&D General Payn's Ponderings: The Fighter's identity; or, what's left after the combat pillar?

[Horwath]

no class needs any effort for social pillar.

there should be a number of bonus feats equal to proficiency bonus that focus of social/exploration.

I.E:
bonus skills, bonus tool and or languages, non damaging cantrips, most exploration knacks from LU5E