If ScRs had less DPS than ARs they would be useless. Look at the current TAC AR as an example. The frontloaded combat style of the ScR requires high DPS.

You can't only balance with numbers...
For the ScR to have less DPS than an AR it would require it to do only only 36 damage per shot, or have a RoF of 350 rounds per minute. I don't think I need to tell you that this would be utterly worthless.

Some weapons require more skill to use than others. In videogames, this skill requirement is almost always rewarded with higher DPS than another weapon that is easier to use.

The SCR should have a lower DPS regardless of its heat and tactical status. Reason being is that it's bread and butter is the charged shot. Meaning the SCR can go from a DMR to a SR in the click of a button. Keep in mind for a long range weapon lower DPS almost always means lower rof not lower damage. In the case of the SCR it might also need some lower damage but a longer time until cool down. My reason being is that if you look at the ion pistol it has the lowest DPS and the lowest range of all the pistols but a 350 damage charged shot which justifies it's lower than average DPS and this is a very special weapon.

As for the overall DPS balance of this game i think it should come with rof, accuracy, stability, and clip buffs/nerfs.

I did read all your rifle changes post and I have to slightly disagree with the accuracy one. I judge accuracy by two ratings, accuracy by the accuracy stat and stability. The accuracy stat affects how good the weapon is in CQC, while stability Is not a stat it affects the weapons climb. I believe thst CQC weapons should have the best accuracy but the worst stability, vice versa for long range. There is also bullet spread, and I also believe that the AR and CR should have decent bullet spread while the SCR and RR have tight spread, a tight weapon would meab that you need pinpint accuracy wether in ADS or hipfiring to hit a target. This along with what I said about accuracy and DPS would make long range weapons good at long range, very good, but very bad at CQC.

As for clip size long range weapons have a higher damage per shot therefore they need a smaller clip to maintain an equal clip size damage count. At the moment high damage per shot weapons also maintain a higher total clip damage, enough so that their longer reloads do not help bring down this damage. This should also be adjusted.

+ Accuracy Ratings
Simple and to the point, the greater the range of weapon, the higher the accuracy. It would not make sense to have a long range weapon not being able to actually hit things at long range. As we shorten effective range of rifles (approaching Assault Rifle) you delve into pray and spray mechanics. Currently the Rail Rifle's high accuracy rating allows it to be a good cqc weapon as well, but mainly because of the current DPS imbalance. Given that AR should have highest DPS, in a cqc scenario the Assault Rifle should really beat the RR.

Now we all know that currently the Rail Rifle's tight hipfire (higher accuracy and slower RoF) make CQC handling actually pretty effective, as CCP introduced the Breach Assault Rifle we should have been well aware of this. So in a Rail Rifle versus AR in AR optimal, the dispersion on the assault rifle should only be enough to the point where targets beyond optimal become increasingly difficult to accurately hit (when full auto so you would need to manage shots to get a good accuracy at longer ranges) but not so much to where in a CQC loss of control would be too great to bear or too quick to manage.

under this system, the sniper would tickle you lightly, the laser rifle (which needs to out range RR's), will act like a laser pointer, and shotguns/knifes will 1 shot heavies.
Are RR's a bit to good in short range. in skilled hands/keyboard and mouse users, yes. will lowering dps fix that, yes. will it hurt it at long range(60m out), yes, badly.