It's not really a matter of neglect, it's a matter of finding people who actually want to do this. OS integration is pretty difficult with Firefox's codebase, p

It's not really a matter of neglect, it's a matter of finding people who actually want to do this. OS integration is pretty difficult with Firefox's codebase, partially because it's not really a native app. Parts are real (like the titlebar) but most isn't (including scrollbars). It's hard & dirty work being done by a very small team. (I'm a former Mozilla employee who added Lion Full Screen support and did some other OS X integration work. If you know somebody who cares about Firefox and wants to work on OS X related work let me know and I'll git in touch with the right people to make that happen.)