We are heavily involved into unit tests development and have found Resharper's Unit Test Explorer really helpfull. Our finding in our daily routine is that one more feature would be appreciated - group tests by test owner in addition to already exisiting grouping options.
By owner I mean Microsoft.VisualStudio.TestTools.UnitTesting.Owner attribute used to decorate test methods.
The same grouping by owner in Unit Test Sessions window would help to find out who failed what. That's would be a huge addition to those who deal with tons of tests on a daily basis.
Thanks a lot!