I am proposing that developers who list add-ons in the official XenForo resource manager must be required to list any activation/licensing enforcement/anti-piracy measures in their RM listing. I suggest this be a required field when creating a listing.
I feel that it's important for people buying or installing an add-on to know what they're getting. If the add-on is, for instance, substantially encrypted, this might make it impossible to troubleshoot/support if the developer stops working on it. If the add-on calls home every day, this can cause site problems if there are network communication issues or if the developer takes a server down.
This is simply a way to remain transparent about what your add-on does. Developers should be compensated for the time they spend, I just want to know what I'm buying when I buy it.