Similar suggestions have not gone very far in the past. IMO, the reason for this is that Wikitree decided to use DNA as a level above confident and then treat it like any other evidence. An analogy would be requiring I make my birth certificate public to confirm the parents of my great-grandfather.
No other site does this. IMO, the most significant problem is requiring that we connect the DNA test to an identifiable person and until this changes, no real solutions are possible.
Guidelines are set up to help us make decisions and prioritize. What is more important in the following example.
An FTDNA project leader has about 500 people who have joined a particular surname project. He has asked for and received family trees from most of them. He is prohibited from connecting the DNA test to a particular person, but he could tell indicate that the decedents of a particular ancestor have DNA tests that are consistent with the existing trees.
Is it more important to know that these tests exist and that a contactable person may be able to provide some additional information to help those trying to narrow down their own connection; or is it better to have no information, because of the unwillingness of the FTNDA project manager to identify the DNA Tester? Wikitree chooses it’s better not to know. I would prefer we did know.
I have about 25 identifiable DNA cousins. I don’t have the privacy concerns that most of them do. When the recommendation to them is that if they have a privacy concern, then just don’t participate. There must be a better solution. I have removed all my DNA confirmations because I just don’t see the upside of having to negotiate with family just to display an icon.
I believe that most Wikitree users would prefer to see a list of every cousin who has taken an autosomal DNA Test and work to see if there is some useful information than only to see those that 3rd cousins or closer that have taken a test and have already been confirmed.
The focus should be on providing information helpful to the mapping process, using accepted mapping practices. The primary purpose of mapping is to help find connections that have not already been made. This process will by its very nature identify parent/child relationships that DNA further supports.
Just my Opinion.