The achievement rewards were around for over a year before the random drop system was added, so I have no idea what you're trying to suggest here![]()
They removed the achievement milestone weapon unlock for about 1-2days when they introduced the random drops (syp vs sniper update?) hopping for less update class spam, people rightly complained that one guy could play the game for 10minutes and get the new unlocks but Mr TF2 pro could play for hours and have all the achievments and have nothing, so they put it back in.