ALWAYS ALWAYS ALWAYS ALWAYS use something yourself before accusing it of being OP. You need to not only see its strengths, but experience its weaknesses. Compare your success witth the MD with results from other light weapons (AR, shotgun, laser, sniper). Your unfounded misinformed opinions could lead to nerfs that ruin legitimate balanced weapons/playstyles, and make them not worth using anymore (and a waste to develop and add to the game to begin with).




A standard basic variant assault rifle contains more damage per magazine than a mass driver, and is way easier to use since it just shoots exactly where you point without having to predict paths. The standard basic variant assault rifle (which does 31 damage per shot) for example has 387.5 damage PER SECOND, which means in 2 SECONDS, it does 775 damage, enough to kill basically anyone but a well built heavy (which would just a second more second). The assault rifle can be used effectively at a greater ranges, and has no risk of damaging the user at close range unlike the mass driver.

Compare this to a basic variant standard mass diver. An MD fires 60 rounds per minute, which is 1 round per second. It does 225 shots per second if its a direct hit; did you read that? only 225 per second, and that is ONLY if you get a direct hit (rare). The basic variant standard AR does 387.5. Landing a direct hit with a mass driver not only takes more skill to do then getting direct hits with the AR (since you have to predict trajectory), but also does LESS damage per second. Now to the splash damage, the splash damage is 115 per shot (and per second since 1 shot per second), and that is usually all you will get since direct hits are rare.
387.5 > 225
387.5 > 115

In exchange for the higher difficulty to use, less damage per magazine (1350 for MD < for 1860 AR) , less effective range, risk of self-harm, and the crappy DPS compared to the AR, the mass driver gets to bypass cover, and damage multiple enemies with splash damage, and the blast effect. Its a fair trade-off.