seems silly that I have to even ask for this, but I think an average review feature is badly needed, this shouldn't take too much time to work into the system..
You simply put a hook in the pahe like [average rating] and the plugin indentifies it and placed the review stars in the post on there.
I would and have in the past worked with coders to get iumportant features like these implemented. but then there were always issues with updates, and incompatibility issues. Since wordpress is constantly evolving, it's not really feasable to pay a coder to look into this and constandly reupdate custom mosifications on each wordpress/plugin update.
Please can you consider this for the near future.