Twilight wrote:It does have bearing though. It may not directly affect her personality, but by representing her talent of showmanship, she has a much higher chance of basically becoming that braggart compared to some pony that has a cutie mark of say, parties. Sure, a party pony could be a jerk, but he/she probably wouldn't be very good at parties since nobody would come.
I think the causal link goes the opposite direction.
I kind of wish Trixie and other one-episode characters recurred more often just as a thing the show did. Little things, like if the slew of new pegasi from Hurricane Fluttershy, or Junebug from Secret of My Excess had more speaking roles and actual personalities. The main 6 could consistently be shown to have friends outside their group, opening up more possibilities for character interaction and making the show more realistic as a side-effect.
Twilight and Cheerilee being shown talking in The Show Stoppers is the kind of thing I'm talking about, but if it were done for its own sake rather than getting Twilight involved in the story.