The italics are my friend's replies, FYI.
"I want to play a pure sniper. Ana doesn't interest me, for the fact that she seems like a secondary healer to the main one on the team. She also has no way to score head shots (I know that's not the point for Ana, but it doesn't make sense to me that she's a sniper that can't get kills with headshots), and I had no luck with cooperating with teammates when they have/don't have their ults ready. I don't want to fire my Nano boost wildly and hope for the best, for one."
"Then why even put a charge in there? It feels like it sabotaging their own skill to put in there."
"You have to aim for headshots with her assault rile to do any killing damage. Even more so when there are characters that can sneak up or surprise you, and if you don't have a fast respond time, you're basically dead."
"But she is a reliability, unless you can ALWAYS land headshots. You're basically saying 'Leave her alone', and that sounds silly to me. There has to be some compensation, or else she will always be a mediocre character that will be played for laughs. If Blizzard doesn't want to change the above mentioned or rework her, then why is she even there? Snipers are supposed to be feared at a distance, but the fact that almost anyone can pick her off, makes it counterproductive to what a sniper is supposed to do in a team-based FPS."