I don't like cone of fire. If I aim my shots, they need to go where I aim. If I'm on the rifle range, my shot isn't going to miss by 2 ft wide of the target if I'm not aiming that way. The only way that happens is if my sights are all jacked up.
That being said, I am ok with environmental impacts that would mirror COF. I've said it too many times but we have everything within our control but we're not penalized when we play out of control. Mechs, just like vehicles, do have some gyro stabalization for weapons. But, when your mech is running at max speed over terrain and you're firing weapons with recoil, there needs to be some level of impact. And, when you're pushing your mech to its limits around near shut down level of heat (btw, if you're not, you're either hiding, moving, or not playing hard enough), there needs to be an impact. There is one thing that is in game that you could add in:
- Weapon spread (added in when PGI created JJ reticle shake)
So, if we take the OP's concept, which I've been ok with for a long time, and apply arm mounted weapon spread based on speed and heat, that creates cone of fire while keeping things in the hands of the player. Want your shots to land with greater accuracy? Slow down, or stop, and keep your heat low. Add in a small level of this for torso mounted weapons, maybe by way of reticle bounce, and things are ok. Again, all of what impacts your ability to hit are in your hands.
As to the topid of ACs being burst fire, I'm ok with making them act like that. There is only one thing that poses a problem. UAC2. We know that they're coming and any idea that you come up with has to work within the limits of the 0.52s recycle time. The UAC2 is going to have to be designed to pop off two shots before the weapon recycles or it is simply a normal AC2. If they make it so that the second shot can fire off within 0.1s, or so, of the first, then that opens up room for burst. Even still, you've got to figure out how to fire multiple shots within that 0.52s threshhold. Ultimately, all you'd be able to do is have each AC first two shots within 0.1-0.125s. That begs the question, then, how much spread would be achieved by having shots fire that close together? And, is it worth the money and man hours to make the change?