I'd love to do that, but frankly, I'm not the person with the skills to do that. There are tons of LJ communities dedicated to drabbles and I'm sure you could find something to make you consider revising your statement. What I saw of those twitterfics, I'm reminded of Quizilla. If one's first introduction to fanfiction were the fics there, most prominent being poorly written and horribly spelled My Chemical Romance or Naruto (or whatever the kids are digging these days) daydreams, one might be rather hasty to draw the conclusion that all fanfiction sucks. As a venue it wasn't meant for stories, so most of the people with the talent for telling good stories tend not to wander there to tell them.
I'd love to go for more whacky similes but I'll limit myself to one. A shot of whiskey or a keg of beer; it's all alcohol just like drabbles and epics are all stories. And belittling someone because they prefer the other is hardly cool.
For the record, my short fics will stay up until such a time that I delete them for my own reasons or the site creates a rule about minimun lengths. Their lack of artistic value has *nothing* to do with word count, anyway.