Add PriorityAttribute: This can Improve parallel execution dramatically
The tests are ordered for execution depending on automatic generated priorities.
Execution of an isolated test (e.g. needing exclusively the "Task Runner" Resource) causes that no new tests are put into the Pipeline (local and grid node) until this test is started.
If I could set the PriorityAttribute to all isolated tests, I could run them all together at the end rather then often interrupting the Pipeline that contains many long running tests.