When I am setting up a project for the first time and adding user roles I spend alot of time going back and forth between a user list screen I have open in another tab and the project user role setup screen so that I type in exactly the correct username.
It would be much better if you just have a dropdown textbox list all of the available users to add to the project roles when filling in this information.
I have seen a dropdown textbox in other screens when you are required to select a user.. So why doesn't it exist in the project role assignment page?