This would help extremely much when studying single characters. What I mean is instead of having example sentences for single characters (90% of those sentences are bugged anyway), you could have words that the character can be used to compose. Lets say you are studying the character "体", then you could add "身~" "~会" "~育" "本~" etc. This is extremely important, as studying a character by itself, not knowing how to use it is kind of useless.
And then of course, if you really want to make people learn in a fast and effective way, you could add this to the meaning part, changing it a bit, like:
~[tǐ]
1. noun body or part of the body
肢~
2. noun state of a substance
固~
3. noun style; form
文~
4. noun system
政~
5. noun style of calligraphy
你写的什么~?
6. verb personally do or experience something; ~味
etc..(Yes, I copied all that from nciku^^)
Of course, this would take a lot of time for 1 or 2 people...but if you make it so that some of us users also can type this in and save it to the database, it could be done in just a few days.