The problem I see in this addition is that in every game with ADS, using ADS is the only way to effectively hit anything.
Which means that the feel of Halo combat - with the "fluidly jumping/shooting/grenading/meleeing while strafing and juking around a bunch to avoid getting hit" will be fundamentally broken, because you can't do that dynamic combat stuff if you have to zoom in and hold your gun up to your face to hit anything.
...It'll be just like every other game now.
For those of you saying "this doesn't seem like a big deal, stop complaining internet gamer idiots," this post is the reason why it is a big deal. ADS fundamentally changes the style and flow of combat. Imagine TF2/Quake/UT with ADS where, instead of circle strafing around and bunnyhopping, you and your enemies are just pulling up ADS when you see each other and holding down the fire button until one of you is dead. That is the fundamental difference between the arena-style combat of those shooters and the ADS-style of most other modern military shooters. That is why this change is a big and potentially alienating deal.
Exactly. It's a huge change, and could potentially rip the game flow to shreds. Sprint could be just as bad. It largely depends on how they design the maps, though.
When halo reach added sprint, it broke the previously sound design of many maps. On a map like Sanctuary, where every inch is carefully spaced and the amount of time it takes to get from one part of the map to the next is critical, sprint became mandatory and dumb. Objective games sucked because either team could be on the enemy's side of the map 6 seconds after they spawned.
Sprint makes sense in a modern military fps like battlefield, where you might spawn a minute's run away from the action and need to dart from cover to cover. It makes sense in a game like Destiny where the player is empowered in mobility with double jumps, jet packs, insane dashing bladedancer abilities, etc. It doesn't make as much sense in halo's signature style of gameplay.
The clip looks like a potential step in the wrong direction to me. Obviously it's very early to tell for sure how the game plays. I would just prefer that 343 not regress farther than they did with halo 4. People (like Jeff, who always complained there wasn't sprint) may embrace sprint because they really just want to run around till they find a guy and shoot him, but there was so much more to halo's combat in previous iterations that I hope it doesn't end up that way. We have enough of those today, and not enough good halos.
Edit: I've seen more clips with different mobility features and heard about a dash boost and double jump. Plus, a 343 rep tweeted that ads works like zoom in previous halos, just with a different visual. We'll have to see whether those break the game or just add to it. I will add, though, that I like their concept of "fair start," meaning everybody spawns with the same weapons and abilities rather than a custom loadout.