I think what this boils down to is who you are intending to fight.
If you look currently both UK and USA in Afgan use a £ 35m anti tank helicopter to shoot lone " infantrymen " As an ex grunt and then pilot I would prefer to see a less capable heli but have more of them so I have almost a personal one there, at my beck and call. To take the argument to the extreme you would end up with one do it all see it all machine.
As the machines getter ever more sophisticated they need a bigger and bigger logistics tail to keep them flying, let alone the expense of procurement in the first place.
lets be honest having an Apache longbow that can acquire and prioritise 250 targets is rather ott, who in the world has 250 tank, apc's etc etc