Just give it a much wider dispersion past close range, so it's more of a suppression weapon vs infantry, yet still has enough accuracy to be used on vehicles.

Think like the HMG, but bigger

True enough.

My only complaint with tanks, generally speaking, is militia tanks. Swarms and plasma cannons need more buffs still to make them useful AV options, but standard tanks are actually almost right where they need to be. Blasters are just a bit too good at what they do, which is kill both infantry and vehicles. They either need a reasonable decrease in effectiveness for one of those, or a slight decrease for both.

I think the same can be said of small missiles for dropships, but that's for another thread.

I know you think that it's just your incredible skills making you do well, but the game actually is still in a process of being balanced. While I know it's difficult for you to grasp, things still have some work left. Swarms are useless vs anything but bad or unlucky vehicle operators, plasma cannons are still a joke, and as this thread is attempting to discuss, blasters are too good at being "all around" options, and should either be good at one thing or slightly less good at both.

Now please, the adults are talking.