343 just shot themselves in the foot.
I don't know how much the rest of you know about Halo fan culture (I'm an expert), but no sprinting and lack of ADS are huge parts of it. It's not like it is in CoD where you can become successful by being a camper. If you camp in Halo, you bring shame to yourself, and the only way to get rid of that shame is repentance.
What this means is the xbox public, after hearing about this, is not going to want to purchase Halo 5 for xbox one, nor will they purchase the Master Chief Collection. This is HUGE. You can laugh all you want, but 343 has alienated an entire market with this move.
343, publicly apologize and cancel sprinting and ADS for Halo 5 or you can kiss your business goodbye.