Diglett: ban
Gothita: do not ban
Gothita and Diglett are clearly miles apart. Typically, trappers have a weakness in that they typically cause users to lose momentum. Diglett is not like that. Not only is it capable of removing a larger amount of threats than Gothita, but it's capable of switching attacks, ramming anything faster with a decently strong Sucker Punch, or preserving offensive momentum with Memento. Devastating sweepers such as Fletchling, Zigzagoon, Life Orb Abra, and Shellder suddenly have their checks removed, AND switch in + set up opportunities.