Saeviomagy, I might agree that the cost is a little bit high compared to the cost of learning a spell from another wizard, I could nerf it down a tad. But not compared to the two spells mentioned, as neither of them are even close to allowing you to gain information about a spell. They might help identify a spell, nothing more (Contact other Plane only allows yes/no questions to be answered and Legend Lore gives information about an item, location or person).
The purpose of the spell would never be to enable the caster to learn all his spells through. The purpose of it would be to enable him to learn spells that have otherwise been lost from the world, making them unavailable to be learnt from living Wizards. And the fact that you can learn a 9th level spell from a Wizard at 450 still requires you to locate a willing Wizard to teach it to you, which might be easy enough in some Campaign Settings (like Faerun), but alot harder in others. The spell might need to be altered depending on the setting you play in and the availability of magic there. If you play in a really high magic setting where every city has a library of spells that you can purchase for standard prices and no spells have been "lost" to the world, then it is a pointless spell, I agree. In a Dark Sun like setting, it is almost overpowered.
The issue regarding the feat is also something which I am in two minds about. Even though it grants a feat, it isn't as usable as the feat normally is. Since the spell has a limited duration when you gain a virtual creation feat, there is a limit to which items you can create. Since casting the spell takes a week, you can't extend the duration with multiple castings. But a single casting would allow you to manufacture minor items using the creation feat, especially if you use Extend spell on Spirit Lore.
About the Fleshpuppet, I am still not sure if it is evil. Spells become evil if their energy is evil, not because of their purpose. Fireball isn't evil, even though it can only be used for destroying things, Animate Dead is evil despite the fact that you could cast the spell for the sole purpose of getting the created undead to build schools for homeless children. The spell itself and the purpose for using it are two different things. The Fleshpuppet can almost only be used for "evil" things, i.e. using it to drain life from or something similar, but it isn't necessarily evil for that reason. And it is imaginable that someone could use it to create a "decoy", to disturb a divination spell that locates living creatures or something similar.
