Well "heart/love being sent your way" could lean that direction as does the rainbow for oh my gosh, that's terrible etc. are what we have now.
I want a "NO WAY OMG BUTTON" although I'm not sure I'm going to get one. I think informative and useful are a BIT redundant in a way, although I'm sure we all have some sort of "mental picture" of what each symbol means.
And perhaps yes, we may not like, need to reply to every post, there does come point when I fear the world will consist entirely of emogees and not words and then, much like the Egyptians we are doomed.
I also think this topic was pretty much done to death when they changed, although the hottest debate centered around the disagree button, also probably not about to be changed. Etc.
Anna