Have you experimented with gesticulation while talking about the stuff you talk about in your videos? What are your views on gesticulation and it's effectiveness, including facial expressions etc.? If I recall correctly gesticulation was talked about in a Sam Harris podcast where it was said that scientific data suggests that it can increase mental fluency (maybe more elements, but I don't know).
I have a feeling it may increase people's ability to follow your thoughts and ideas and maybe even understand them better if you gesticulate while explaining them. You could also expand your usage of facial expressions. I enjoy the ones you are doing, but you probably have more fun ones in there too, don't you?
I enjoy and feel it's easier and/or more effortless to concentrate when someone is talking with their whole body, so to speak.
An example: I think Eckhart Tolle does this whole embodied communication beautifully, see this video: