I don't see where a HX is much different from a HA, especially if latter is saving ammo and even picking up arrows he finds.
And although I agree that you should always take into concern how balancing a class feels for other classes, you should also balance around the effectivity of a class (surprise, surprise). And this is where I say HX are fine.
I am really against any further nerf of classes, as the game really reached the maximum extend of nerfs possible.
HA's and similar are not really the problem, they are not OP os something like that. The gamemode is the problem. Just make MOTF appear on every map, perhaps this is the right hint for retarded infantry that approaches the end of a round with outnumbering a HX 5:1 and then loses the round by running after the HX (Just think about single player - after starting a new game, how do you use to kill looter parties? Yes. You are not better than those looter bots
). Because - as I preach everywhere these days - missing tactical knowledge of infantry is the problem. In fact you can say that the average infantry players is less skilled than the average player of the other classes. Or better: 90% of all players play infantry with less skill than they could. And then everyone complains about bad balance.
Just make the master of the field flag appear ALWAYS at 2:30 and things will be perfectly fine. There is really no need to kill HX's by forcing them to reload in some dark corners or the like.