GMMichael
Guide of Modos
Charisma is misrepresented as beauty because that's the simplest, most objective way to view the ability. And if you'll take the leap with me, the stereotypical gamer isn't exactly gifted in recognizing other things that would fall under Charisma: leadership, compassion, or reputation.
I have a suspicion that the 5th-ed DMG provides numbers for exploration, investigation, and socializing. Or guidelines anyway. But yes, it seems uncommon for a DM to say "you get 100 XP for swaying the local lord's opinion." Probably a good argument for not using XP; just let those PCs level up when they've passed a storyline milestone.
This always annoys me, especially at tables that discourage murderhoboing. I mean, if you don't want us to kill everything in our way, why do we earn nothing for exploration, investigation, socializing and so forth? This was one thing I really liked about 4E encounter design, XP was not awarded based on what you killed, but how you solved the encounter. Bypassing it entirely through cleverness and guile was worth exactly as much XP as killing the room and looting the bodies.
I have a suspicion that the 5th-ed DMG provides numbers for exploration, investigation, and socializing. Or guidelines anyway. But yes, it seems uncommon for a DM to say "you get 100 XP for swaying the local lord's opinion." Probably a good argument for not using XP; just let those PCs level up when they've passed a storyline milestone.