Well Hawkeye and Widow are both in the core Avengers and off limits, but as I mentioned before to Metronome, there is/was a teenage female who assumed the Hawkeye alias when the world was under the impression Clint Barton had been killed. 

[b][url=http://www.comicvine.com/kate-bishop/4005-2262/]Her Comicvine.com Profile[/url][/b]

~KL~