I think theyre funny names. I dont know much about Rosenstein, but Mr. Magoo seems to fit weak Sessions pretty well.
Ok for all of the Sessions bashers here is what he is recused from (and it is not investigating) it is primarily from talking about or sharing information about ongoing ones etc. Reason is very sound on multiple fronts for those being investigated as well as legal requirements about disclosure
Here is the link to section of DOJ provided documentation the only section he is recused from
https://www.justice.gov/usam/usam-1-7000-media-relations
In short he is not gonna shoot from the hip or destroy existing and ongoing investigations in any way and if you feel otherwise faced with the law I cannot help you
Choose