Holy crap am I so tired of this thread.
First off, only casual/part time gankers use alphas. Serious gankers use omegas because it allows them to train their skills higher, multibox, and to use more advanced equipment (such as T2 Large Hybrid Blasters).
Second, there is already plenty of costs for people who participate in ganking. Maybe you might want to look into that before making suggestions based on your misconceptions.
Third, ganking doesn’t need to be nerfed, because it is already balanced in favor of prey. The truth is, is that people die to ganks because they make mistakes, and then get punished for those mistakes. This is how it should be.
Fourth, if you want to learn how to reduce your chances of being ganked to damn near zero, check out the “how not to be ganker bait” section of the nerf ganking mega-thread. If you have any questions after that, feel free to ask.