I left the Manipulations open to interpretation because I'd rather the players take their own perspective on what they want, rather that give them all the specifics, allowing for you guys to play the character you want, without the restrictions of set rules. Of course, they have their limits, but it's up to the player to see how far they can push it without breaking the game. 

Edit: [@Rune_Alchemist] I wanted the Soulsmith to be a weaponmaster, being able to use all weapons with ease, granted they can create it. Think of it as a puzzle, if you can visualize how the pieces fit, you can finish the puzzle. Granted, if a Soulsmith can understand how a weapon works, they can make it. The issue isn't whether or not they can make it, however, the process takes time, and more time due to the complexity of certain weapons, time they might not have in the midst of a battle.