Well actually Blaster turrets ARE Gallentean Turrets, based on EVE Blaster turrets.

The logic, which I think you must have missed, is that Blaster turrets (EVE) are starting weapons for Gallente, as well as they are used best with Gallente ships.

In Dust514, we (Gallenteans) use Plasma weapons (AR, Plasma Cannon, Shotgun?) for light arms and Blaster turrets for our tanks, installations, dropships and LAVs.

So this proves your Goal is already in place...

Edit: More reading on EVE Hybrid Turrets.

ohhhhh...... the bullshit i'd be able to pull off with this turret.

balancing issues though

its maximum range (would have to be shorter than the railguns and missiles at 300 and 275 respectively for the large calibre turrets.

would have to have a high direct damage and decent splash damage. since its a burst weapon. 550 direct at std, 575 at adv and 600 at proto.

splash damges of 450,475,495 with either 3.5 - 4.0 m radius.

charge time of 3-4 seconds for max volley unload

ammo clip of say 8 to 10.

max reload speed of 4 to 6 seconds.

max ammo of 150 -175.

turret turn rate is higher than missile/railgun but slower than blaster.

fitting cost: 175 cpu 550 pwr gird. for std. 200cpu/590 pwr grid for adv, 250cpu,630 pwr grid for proto.

operation skill reduces charge up time by 5%
skill set includes: ammo capacity, proficiency,re-laod speed,fitting optimization

prices are same as blaster.

p.s not going to suggest stats for sml varients as I don't use small turrets.

The details you've given seem to conflict with the basic goal of the turret as listed in the first line of the OP.

I like the idea of being able to carpet bomb an area but having spread out damage over a large area doesn't seem like something that would be all that useful in a fight against other vehicles. In what situation would someone need to actually spread out their damage to the point where the charge function is useful on the large variation of the turret? How much Splash Damage would they need to do in that situation where that would be a useful thing to do? Being able to empty your magazine in such a way seems like it'd be more useful in a way that's reminescent of the high alpha damage Large Missile Turret. How does their alpha damage compare to the Large Missiles in comparison? You say that the Plasma Turret has high "endurance" during combat but what does this mean in context?

You say its an AoE long range bombardment weapon but what would you need to do to make sure that the Large Turret variation isn't clearing out large areas of infantry during said bombardment? Doesn't the basic concept conflict with the direction of recent changes to Large Turrets? If anything it seems like carpet bombing an area would be something that's more useful in the small turret variation as they're focused more on infantry style combat to begin with, this would also diversify them compared to the Small Missiles.