Vagrant Story has an absolutely AMAZING plot. It was developed by Matsuno right after FFT so I highly recommend it.
Never have I felt such a connection to the characters since Tactics (part of this is because of the absolutely amazing new script in WOTL for PSP)
Wiegraf to me seems to be the perfect villain. He gives up everything he held dear, which was noble in nature in order to become a member of the Templar/Shrine Knights. And then his soul gets eaten by a demon and he becomes an atheist and communist (I will explain) as evidenced by his final battle.
"The reeking masses yearn for gods and miracles. It is their opiate, and they consume it greedily. The people do not endeavor towards greatness, but rather mire themselves in their petty strifes - shackles on the feet of man."The quote "opiate" is a direct reference to Karl Marx (the inventor of communism) calling religion the opiate of the people. And Delita Heiral remains my favorite game character ever.
Honestly, it is the new script which does it for me. The old one was okay but the new one is so amazing with the quotes like what I mentioned.
What troubled sleep have you known, to speak of my dreams? No matter how sweet, a dream left unrealized must fade into day. Only with power can dreams be made real! I see the truth of it now. What good, dreams, without that power? You think me a thrall? So be it! Your envenomed words succor me, for when at last you yield - as you must - their poison will consume you!