When I was designing my flag I thought of all the important things that happened to Taiwan. I didn't intend to create a easy to draw one, because, as Portuguese, I cannot draw my own flag (except the kiddy scarlet/green with a yellow ball in the middle). That doesn't make me like it less (although, for me the ancient monarchy flag is a lot nicer, because I do prefer white and blue). The dificulty in drawing the Portuguese shield is enourmous, as it is an extremelly detailed one, but the fact is that, no matter what, people relate more to the shield than to the rest of the flag (if you see any national team (any sport) they will bear the portuguese shield).
Problem in Taiwan, is that the only symbol in the flag is the KMT one, and so, identifying with it is basically identifying with the flag. That is why in many green rallies, you don't see the R.O.C. flag, as they don't identify themselves with the KMT. That is the biggest trouble of this country - people don't identify themselves with what was suppose to be a national symbol.