I think it would be cool if there was tutorial on how to make a custom living entity could have a conversation with you!!
Like when you right click on them a custom gui pops up where you pick what to say to them depending on what they say to you! Then depending on what you pick they respond in a certain way by talking to you differently. For example if you said Who are you and why are you talking to me? Instead of saying I'm good, how are you? When they say Hi, how are you?! They could say I was just trying to be nice!!
Also the gui could change each time you talk to them! After a while some conversations could start repeating.
Also this would help me with a mod I'm making.