This is an idea I heard somewhere (I forgot where), that, if implemented correctly, would give Halo 4’s rifle and or pistol a huge skill gap.
So the basic idea is that the faster you shoot, the less auto aim you get. It’s bloom reimagined, the faster you shoot the less accurate the rifle becomes, but in a completely non-random way. Very skilled players could shoot the rifle at its fastest rate and remain accurate.
This is generally how it would work (let’s pretend we have a 4 shot semi-auto rifle with perfect accuracy). On the first shot, you’d get about the same auto aim as the DMR. This could be represented by the reticule being green. On the second shot, if fired as fast as possible, you’d get noticeably less auto aim. And so on and so forth, until at the fourth shot and beyond, you get no auto aim, like no scoping with the sniper. The auto aim you recieve could be illustrated by the color of the reticule, from green (regular auto aim) to yellow to orange to red (no auto aim).
Now at four shot at max rof would be obviously very difficult to pull of, and therefore should have a kill time similar to the CE pistol. To maintain the normal auto aim of the first shot, you’d have to shoot about half max rof, which would put the kill time somewhere between the H2 BR and the DMR. All other weapons in the sandbox could be balanced accordingly, each having its own niche and being most effective in that niche.