add a check box feature in the "Refine my Results" lists on the left column in each facet
The value of the faceted search is that it leads the searcher quickly and efficiently to the desired result. The checkbox facet type lets users select multiple values.
We would like to add a check box feature in the "Refine my Results" lists on the left column in each facet, as is already being done in the "More options" links therein. The reason for this request is that in our opinion, the user will notice from the beginning this option exists in the facet, and it will facilitate his search. Some users don't click "More options", and thus they will never know that the check box feature exists.
Lucas Koster commented
This is available in the New UI right? So you can remove this idea