If a user tries to create a plugin project of type portlet called "new", and "new-portlet" already exists on the system, LiferayIDE will silently fail and create the project incorrectly as "new".
LiferayIDE should explicitly prevent the user from creating a plugin (of any type) if it already exists in their plugins SDK. Ideally, it would provide some type of conflict resolution where the user is not required to manually delete the portlet from their plugins SDK before they're allowed to create it. Or maybe Studio just provides a descriptive message informing the user where to delete the folder. (I have no preference on how the conflict resolution part should work but am available to provide input if that helps.)