One of my favorite additions in Windows 7, and something that's been a part of Ubuntu for as long as I can remember, is the ability to right-click on an ISO file and see the option of burning it to disc right there.
In Mac OS, there is a misleading right-click option for "Burn
What is a three or four click operation (depending on options selected) in Windows and Linux requires several more clicks in Mac OS and use of a separate application rather than anything integrated in with the desktop. And Disk Utility itself seems somewhat less than stable, randomly hanging without writing an data and, in some cases, requiring a reboot for it to start functioning again.
I realize that the majority of computer users will never in their lives need to burn an ISO, but seriously, Apple, how hard would it be to add this functionality in directly to the initial menu when right-clicking a disc image file?