We want the record with the most recent membership to be the surviving record. If a membership is purchased as a gift, the constituent won't have a gift record so the "Last Gift Date" column is not a reliable indicator of when the constituents most recent membership expires.

I've adjusted the survivor scoring to give "Membership Transaction - Added Last" a lot of weight, but it would be so reassuring to be able to double check memberships on duplicates without having to open the records.

It'd be great if the columns in the Review window could include the fields:
Current Membership Status (Active, Lapsed, Dropped)
Current Membership Category
Current Membership Expires

Most of our duplicate records come from Deal of the Day membership purchases that are imported as new records without de-duping. We have lots of individuals who are repeat Deal of the Day purchasers, therefore they have 2 or 3 constituent records...hence our love for MergeOmatic!