It's a terrible idea. So you wouldn't be able to see a sniper but he can see you? What about tank gunners or planes? The view distance will be longer in ArmA than it is in OFP.
I mean technical limitation, that you really cannot set view distance to unlimited without sacrificing game performance, but you need a lot more of view distance, if you are looking through binoculars or scope, than looking through iron sight. If you are looking through optics, your field of view is much more narrower, so computer have to draw much less things in display. And hey, that's also realistic, that you cannot see so far away with naked eye vs scope... And you can allways set these two view distances corresponding to your computer's performance.
