Edit: TL:DR Here are a couple of graphs showing how I personally would tweak weapon balance.
343 have stated that a title update will soon be released that will address Sandbox balance concerns in the community. Regardless of whether you think they are necessary or not it is happening. Justifiably there are also concerns that blind nerfing or buffing of weapons may simply shift weapon balance rather than fix anything and over all make the game less enjoyable.
I do believe loadouts could be more balanced than they are now but I want to start by saying what I think 343 should NOT do. Make the BR a 4 shot, make the DMR a 6 shot, Increase the DMR’s Bloom. I feel these changes will negatively affect gameplay.
-I do miss the old 4 shot BR but I feel the whole sandbox would have to be overhauled to accommodate it, automatics for a start would need a significant buff in order to be king of CQC, and I think most would agree even back in Halo 2 when the Carbine was a 7 shot kill the BR was better, the BR now has a faster fire rate, the Carbine I think would have to be a 6 shot to be balanced.
-6 shot DMR, eww. From my experience of Halo 4 there is a lot of running away and backing out of fights going on in Halo 4, too much in my opinion, people should only be able to back down when they are well positioned near cover and anyway the whole point of weapon balancing is to promote weapon diversity, not make it so that the DMR is only any good on BTB maps.
I’ve given it a lot of thought and I think I have a solution that would please the majority. Instead of decreasing the DMRs kill time, make the Carbine a 7 shot kill as opposed to 8, this would give it a faster kill time than the DMR, in fact it would be the same kill time as the 4 shot scoped Light rifle (1.4 seconds) and Increase the BRs fire rate such that it has a 1.6 second kill time. I think that is a good start but I do think we could do better.
The Carbines 0.2 second kill time advantage over the BR is significant, after all that is the same kill time advantage the DMR had against the BR. So I think the BR needs another perk or two. The MLG guys are complaining about the BR’s bullet spread inconsistency , reduce that, make it more accurate. Then I think we should modify aim assist ranges.
Aim assist range is the range at which when you aim at an opponent the reticule turns red and you receive benefits such as auto aim and bullet magnetism.
Here is a graph that shows the current stats.
And here is another link that illustrates BR vs DMR ranges compared to individual maps.
I propose reducing the DMRs maximum aim assist range to that of the Light Rifles. This way the DMR’s auto aim range is proportional to only having a 3x scope. Un-scoped I think it should have a 35m range not 38m. Then I think the BR should receive a range boast to give it a perk over the Carbine. Un-scoped it could be 35m, scoped 70m. This would also increase its viability in BTB.
This way the Carbine rules close range, the Light Rifle rules long range in terms of kill time and the BR and DMR kind of sit in the middle with the DMR having more range, and the BR having burst fire and there for Bleed though. I think that would be balanced. The light rifles burst fire mode could maybe be buffed such that it is as good as the old BR and maybe the likes of the AR could kill in 14 bullets instead of 15. But that’s it, I think that should do it. This is what I would do anyway.