I am a DNA administrator for a surname project. Something I would like to see and maybe it is already happening, a place where family lineages can be grouped together based on y-DNA relationship. There should be designed in a way where everyone in the group can provide a link to their online tree, keep notes and the ability to contact eachother through the FamilySearch interface for collaborative efforts. This would encourage users to search for their appropriate group based more on y-DNA results rather than exclusively surname. The reason for this is men with many different surnames can more closely share the same y-DNA in recorded genealogical time. I don't want to get too deep into the weeds on what I'd like to see it look like but this is the basic outline.