Iron Sights were added to the game for folk who are used to them, i.e. used to weapons where recoil is the primary thing you need to control, not spread. We felt having hip fire spread focused and iron sight recoil focused meant players would be able to play with the guns in a style that suits their past experience.
The issue now is that hip fire has so little spread that it’s too good compared to iron sight, although personally I still find iron sight way better at range (if it should be optimal at anything it’s that!)
We could make hip fire worse to fix this, but I don’t think that’d go down well 
We could try and improve IS but I don’t think there is actually much remove to move there.
We could remove IS but personally I’d worry about how many people that might put off the game.
I think it’s probably just a case of us continuing to make small tweaks and see how we can make IS more useful without moving hip-fire’s current behavior.