If I want to signal to my team what faction I'm planning to take, or probably more relevantly, what faction I want the AI to play as while in the lobby, the psychological UX friction I feel from having to move my mouse from where I clicked "change faction," then click a dropdown menu, then click the OK button after selecting the faction, is immense.
Immense may be an exaggeration. Still, it would be an O B J E C T I V E UX improvement if the faction list appeared near the cursor/next to the name after clicking "change faction," and clicking the desired faction immediately changed to it for the given player. Eliminate the mouse movement, dropdown menu click, and ok button click. Would be sick.