Something I would love to see in Halo 5 (or future Halo's) is the ability to 'assassinate' hunters. 
  
Now before you all scream 'NO!' and roll around on the floor, hear me out. 
  
Okay so when I watched Forward Unto Dawn, my favourite bit was at the end when Master Chief shoved that grenade into the hunter. I thought that was awesome! Why can't we do that? I wanna do that! 
Of course, it would be too easy. That's why you would only have a slight chance of actually pulling off the feature. If you failed, you would get knocked back, just like the Chief does in Forward Unto Dawn.  
  
I would really love to see something like this in the future installments of Halo. What do you guys think?