So here is a short list of some of the game breaking things that are causing imbalances in the game so to start us off…
Problem- Vehicles: Have you ever noticed how warthogs, ghosts, and other vehicles are not utilizied as much as they were in past halo games? Well thats all thanks to the plasma pistol and stickies starts.
Solution 1: Make the Operator mod IMMUNE to the plasma overcharge, because even with the operator mod you currently still get stunned for like 1.5 seconds and thats all it takes for the same guy to throw 2 stickies on your hog and then… game over.
Solution 2: Make it so you can only spawn with one sticky instead if two. (still haven’t quite figured out why you can only spawn with one pulse grenade and two of the other grenade types)but they need to make it so you only get one sticky on spawn. This will make get stickies from ordances more favorable and people may actually choose stickes over a needle or speedboost lol 
Problem- Boltshot Nuff’ said too much range no one should spawn with a one shot kill weapon, promotes camping and “nubbiness”
Solution 1: DESTROY IT!!! I NEVER WANT TO SEE IT AGAIN!!!
Solution 2:Reduce range and make it only a one shot kill at super close range, like melee range.
Solution 3: Make it where you can only overcharge the Boltshot once and once you use that one overcharged shot the gun “breaks” and it can’t be used again.
Problem- DMR: Saved the best for last
The DMR is basically your go to gun for any map/playlist. It can be used both for short/medium/and long range situations. The DMR should not be able to beat every gun on every map.
Soltuion: My solution is quite simple and won’t break the game or require other weapons to recieve a buff. It’s called a rate of fire decrease. This will make the DMR lose more battles up close and still keep winning battles at long range (likle its supposed to)
This will also allow people with snipers to actually have a chance to snipe on big maps instead of being killed in 2 seconds by one guy across the map. Additonally a lower rate of fire means less DMR vs Vehicle= DMR wins.
Well those were some of the problems I have encountoured so far in Halo 4 and my solutions to them. Tell me what you think of them or your solutions to these problems.
TL;DR
Don’t be lazy, reading isn’t hard.