This is not an mmo...

[Crica]

giving parties benefits by actually getting things done faster heavily increases the social aspect

me partying with you in order to get stuff done faster doesnt make me social - i joined the party to get stuff done faster and if i socialize with you then that will slow me down

me partying with you because i enjoy partying with you regardless of how fast i get stuff done makes me social - i joined the party to have fun socializing with you while we play the game, time is not an issue so we can socialize and have fun