Let me be clear. All I intended to say was that I liked ADS and consequently would probably enjoy it in Halo if it were to be utilised.
Adding ADS to Halo, in my view, isn't going to 'break' Halo. As a mechanic, it works. That's been proven in other games. A lot of people will love it and a lot of people will hate it. Depending on how 343i wants to move Halo forward, they might use it and they might not. Same goes for a bunch of other things they might elect to use. In this case, I really think it's a very subjective element of gameplay and there's no 'one size fits all' solution to be had. I think they've just gotta decide straight up which side to go down because I think most agree they split the player base with Halo 4 to an extent.
As myself a designer, I can't disagree more.
Just to finish on this thread, it's not because it work in other games it would work in Halo. It's all about design. It's like you would said wall running works in Titanfall so it would also work in Halo. Yeah, in itself, the running would work, but if the map is not designed for this particular gameplay mechanic, then you will only do that on a short run which could break the flow of the player movement, and if the game is not created with that gameplay mechanic in mind, then it will only be a useless functionality.
ADS, in itself, is just a reskinned zoom from Halo if you think about it. But in other games, you can't aim precisely without ADS, no matter the distance your opponent is.
In Halo, you can aim without zooming. Zomming only alter distance view, not aim in itself.
So yeah, ADS could work in Halo only if it acts like a zoom and not like the main way to aim your opponent. If you can't aim without ADS, then it would break the Halo flow.