Respectfully I don't think it's trying to be. G meter on the HUD is a great substitution for feeling how hard you're pulling and the airspeed - for instance - a great substitute for the wind noise, change in control stiffness or other cues you would get.
End of the day, it IS a game buddy. Most AH players probably play in barefeet, watching the TV in the background and with a soda or coffee in their left hand.
Wind noise and Gs are already accounted for. Not only with gauges which you can or cannot see but through speakers and the blackouts. Adding it to the HUD is redundant and pointless in my opinion. As is the HUD itself.
It is a game and a lot of things are already given to players in the name of playability. We already have tools that are typically not available to modern pilots with millions of dollars of avionics. I've been playing this game and on these message boards for quite some time and the HUD has never been any kind of regular wish.
My main concern is not that it actually exists (don't like it but can accept it) but that it can be used as a tool to game the game. The more customizable it becomes, the greater chance that will happen in my opinion.