Good, then the 600 limit can be lowered because there are no 600 materials yet. Good enough if you can store 1 of each that exists 
The reasoning I heard about limits pre 2.1 was, 'we don't need more space, because your only short on space, because your not using the materials.'
Good, then the 600 limit can be lowered because there are no 600 materials yet. Good enough if you can store 1 of each that exists![]()
Yep, just allow 99 or more of each and every material etc. And if you burst that, the game just ignores it.