Is it worth getting Vagrant Story: yes/no?

[Pete for President]

(SPOILER)Why was de duke's sone kidnapped in the first place? Was this an excuse to lure in Riskbreakers as well as the Crimson Blades?

(SPOILER)This is actually one of the loose plot threads in VS. The game never gives a real reason why, but I wouldn't be surprised if this was all an elaborate trap to lure a few people to Lea Monde. Though this is speculation, I figured that Sydney did this to protect his father by keeping Joshua out of harms way, cause if Joshua was loose, Parliament or the Crimson Blades may have kidnapped him and used him to force the Duke to hand over Sydney and the Blood Sin. It's also possible that Sydney did it to create a visible "cutting of ties" to his father, since it appears most of the villains know he was secretly funding Mullenkamp.

(SPOILER)And why was Sydney looking for a successor? And what had hiding the key to do with it?

(SPOILER)Both Sydney and the Duke saw the Blood Sin as a curse, especially when you've got people in the government and church who want it for their own schemes. After the Duke saved Sydney's life as a child by transferring the Rood Inverse onto his back, Sydney made a vow to his father that he would rid the family of the curse of the Dark. So he had to find someone who would not misuse the power and that's why he chose Ashley.

Thanks for clarifying. Also, gotta love Grissom's fate.