Originally Posted by Unregistered

If I understand the problem correctly, it isn't so much that the macro does things automatically as it is that it does it nearly instantaneously for all of a target's cases. Making everyone (macros included) have to wait between clicks solves the problem of the macro taking only a partial second to unlock all of someone's cases, letting human players have something of a chance to compete with the macro.

For a macro to open cases instantaneously (or as close to that as possible), it wouldn't care about the position of the button, but it would just send the registered click. To combat that, they would have to randomize both the button's name and position in the code, so you couldn't look for a specific string.
Macros were most likely just a repeat of mouse movements (refresh pink cases, click on first position, click use, click close, repeat), which does mean it takes a couple of seconds between each case.
My cases still seem to be opened at the same rate, and I still open cases in a similar rate that I did, so not sure how effective the change was. But if complaints go down, I'll write it as a success.