Hi Fumanchu
I think Adeptitus and Sampanking sum it up pretty well Chen true intention in this matter.
Chen may has been somewhat an idealist, but truely this is a political move. It has nothing to do with idealist. As adeptitus said chen may want to leave some legacy before he leaves office, and like sampanviking said he want to provoke PRC and made KMT in a defensive postition, also I will say Chen true intention is also trying to rally the core-independent groups behide him. Ever Since he suffered a humiliate defeat in election, and losing support from both radical and moderate independent groups. Chen has been in a hotseat that many of his allies are turning against him, he had no choice but to do something radical so he will not be broken leg postition in the rest of his term.
Actually Chen do has his chance on the independent movement, but he cares more about his politcial future So he did not went as far as many pro-independent activites hope, and many people are turning against him now because he did a terrible job on economic.
If you has ever look careful on the Chen changing stance on many issues, chen only become very radical when he was in trouble. A true idealist will never be only active on his believe when he is in weak position. Whether idealists do tend to be more firm on their stance, and only be moderate when pressure was put on them. But for the many years I fellow the news, I only see a man who will do anything for votes but not an idealist that do things as they believe.
I do not think Chen is ever suicidal, but whether not a man who keep his words to his supporters or the rest of World.
And about the rest of your post, I will restrant myself from comments. I just want to say I have difference opinions in that matter.