I think its always great to be able to see the line number you are on. It would be cool if that could be done along the left hand side...and if it could be turned on or off at will.
For some reason i fill quite the opposite... For me - main goal of VA is to make coding more convenient and more uniform through IDEs. That means adding features where they don't exist. I understand that MS would not support/upgrade old IDE because they are pushing new one out, but VA seem to be concerned about all developers, even those of us who are for some reason stuck with VS.6