That's the worst loving thing to do.
I don't see the problem with User-Content Alpha, other than it takes some time where if a person really wanted the textures he would take the time to do it the correct way.
I am pretty sure UCA does something similar or it puts files in another folder. Why would you want to install an add-on and then have to make subfolders in folders just test out a new brick stud you may not even like, it is much more simple to just drag the files in after making them read only and then simply deleting them and let the launcher replace the default studs files.
To the forgettards saying what I am doing breaks the game, and how I am giving "advice" on how to break the game, explain to me how I have been doing this since V20 and my game is working fine. Putting other files as "read-only" CAN damage something but why one someone need to replace that?
The reason Badspot doesn't like this is because when updates from the launcher come out people may get errors or certain things may not get updated because they are set to read-only, however I only set brick stud images and the Blockland image logo as read-only and nothing else. I doubt the brick studs are going to change anytime soon.