I like the character length the way it is. 2000 characters is 300 words or less. That's about average for a High School essay. It keeps everything intense and reasonably brief. I've discovered that I like to write (a lot). Limiting everything improves my TED experience. If I see a video or find a comment on a conversation that really provokes a response. I have to sharpen my thinking and use each character wisely. That's good!