Making your game general

ITT we discuss how to collaboratively design our games.

How do these look:
1.Scroll of Random Attribute Upgrade: upgrades random attribute of item its used on.
2.Scroll of Random Attribute Replacement: Replaces one attribute with another randomly selected.
Basically a very simple and powerful crafting system thats not overpowered, due scrolls having Nth levels(Scroll level1 gives less upgrades and random replacements gives the new random attribute less statsa).