You think character as personality, I say they are symbol too. Symbol don't need personality, they need concept.
I think of characters as being CHARACTERS. Look up that word. Symbolic Face-Men? Sure, there's lots of success here. Although I put it to you it's pointless to duplicate the success of a marketing machine behind a forced face-man. That's not going to advance the medium or show insight except into the marketing world, which is fine, if you've got millions, you can make a Symbol popular. However, I still won't give a damn about the crap symbolic character.
Have you got any examples of symbols without personality that are successful outside of being forced down folks throats by millions of dollars of marketing? I'd just
love to hear about it. Eg: Kirby has lots of personality, and is symbolic. What's Mario symbolic of, eh? Please do enlighten me.
You're basically paraphrasing me now:
What do successful characters have in common?
Success.
...
TL;DR: Many shitty characters are quite successful. Meh.
Edit: If I sound a bit hostile, it's because I don't take kindly to being told how I think.