I do agree that, realistically, a large missile should have a larger explosion radius than a handheld grenade, but in terms of balance, when you take into account infinite ammo (Assault DS with 3 cycled missiles) and being able to hide behind a wall of vehicle HP, it gets kinda complicated.

For blasters, I don't think it's the dot that needs fixing. I think that the blaster should have a bit of a cone to its fire to allow for a bit of inaccuracy. This would actually help speedy dropships land a few spray & pray hits instead of miss every shot because you weren't dead-on with your aim.

Rails... are so extremely niche that they'll never see much of any use. There are those that can utilize them exceptionally well, however I could probably count the amount of good small railers on one hand.

See, your first point is what really annoys me.

One of the primary arguments against splash radius on vehicle missile turrets every time it's been up for discussion has been vehicles having unlimited ammo to spam the things.

However, the same vehicle users that want usable splash radius refuse to even consider any ammo limitations.

I mean, I actually had someone argue me down over how games like Planetside and Battlefield only have ammunition limitations on vehicles for "realism" and that that has nothing to do with infantry/vehicle balance, which is so pants-on-head-******** it hurts my brain.

What we need: Stop making stupid excuses to try and defend a broken mechanic (unlimited vehicle ammo), and accept what will honestly turn out to be only a slight limitation in exchange for getting some of the power back behind our turrets.