In trainings I love when someone can keep me engaged. I feel like even if I am not interested in the content, I enjoy trainings where the leader is enjoying themselves and is really passionate about what they are teaching. I can see this in my own trainings also. I try now to only create courses about topics I really enjoy bc if I am not having fun, neither are the participants.
I agree about reading slides and also find needless repetition annoying. If someone doesn't understand they will ask a question. There is really no need to repeat the same information multiple times if an answer can be found in the presentation that will be shared. I feel like sometimes we forget to set our expectations high for teachers. I am always open to questions, I think they are important to the courses, but I try not to be repetitive.