Prevent unregistered users from writing reviews

[Shood]

Hello,
Current settings allowed anyone to write a review for a product, I know that I can decline the review but I'd like to allow registered users only to rate a product
Version 1.2.15
Any suggestion please?

[Basara]

Thank you for the suggestion. We will see what we can add in next version
https://github.com/abantecart/abantecart-src/issues/1335

[Shood]

Thanks Basara,
With the three options you've suggested it will be great features. 
Hope you all success.

[Shood]

Thank you for the suggestion. We will see what we can add in next version

Hello again @Basara,
As a bit improving, if you can show average stars with decimal value, now its only appears in integer value, for example:
if two users reviewed a product with 2 and 5 starts, this should show 3.5 average rate in the product page, but now it shows 4 stars (4 colored and one in gray)

BTW: is there a some script can I change to make (Your Name & Your Review) fields optional /not mandatory?
I looked into /storefront/model/catalog/review.php but couldn't find anything related
Many thanks