Theres this new thing called CRC's, a unique identifyer. it cant be copyed. all distributed though the same site will have the same CRC. he can crap-on crc's.
So it will still be blocked if I copy the GUI file(or even remake it), copy the code in the cs file, change it a bit (like renaming variables and stuff) then package the addon with a different name?
Actually, I won't even need the GUI. I would do just fine typing a function into the console.