I only have a couple of minutes right now, but I did click through some of your posts.
You have a lot going for you - you are a solid writer and you clearly have a lot of interesting topics to write about.
The first thing I noticed is that none of the hubs I clicked through had sub-headings. Subheadings help the reader navigate through your content. It can also help you as a writer organize your thoughts and consider your major points. I would go through a few of your hubs and think about whether you can re-organize some of them with subheaders. I think this would help a lot.
Thanks for having the bravery to ask for feedback. If you want to return the favor, I'm wide open to it as well!