If custom configurations are permitted in a game, I'd take a modified Charlie loadout for general-purpose use, trading in another MPL in place of the SRM-4 - better range, better chance to hit, and no ammo concerns.
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For slightly longer-endurance anti-shipping work than the fearful Visigoth-A offers, there's the loadout I've drawn up below. Failing those, a stock Visigoth-A would suit me just fine, since it's such a versatile config: it can perform well in aerospace superiority, ground-attack, anti-shipping... if the Visigoth-A configuration had more armour, it'd be the F-4 Phantom of the Clan aero-fleet. If an all-up modification of the base chassis were permitted, I'd pile on another two tons of armour (to nerf those omnipresent IS MLs) and field effectively stock configs that omitted the tail-guns; if your Point-mate's (impressive!) forward batteries can't clear your tail for you, you're in too deep for the standard-config aft weapons to do it anyway - or you never should have left your wingmate in the first place. >:(
Class/Model/Name: Visigoth (Configuration: Würger)
Mass: 60 tons
Equipment: Mass
Power Plant: 300 XL Fusion 9.50
Thrust: Safe Thrust: 7
Maximum Thrust: 11
Structural Integrity: 7 .00
Total Heat Sinks: 18 Double 8.00
Fuel: 5.00
Cockpit & Attitude Thrusters: 3.00
Armor Type: Ferro-aluminum (202 total armor pts) 10.50
Standard Scale Armor Pts
Location: L / R
Nose: 65
Left/Right Wings: 47/47
Aft: 43
Weapons and Equipment Loc SRV MRV LRV ERV Heat Mass
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1 LRM 20+ArtIV Nose 16 16 16 -- 6 6.00
Ammo (LRM 20) 12 --- 2.00
1 Medium Pulse Laser Nose 7 7 -- -- 4 2.00
1 ER PPC RW 15 15 15 -- 15 6.00
1 ER PPC LW 15 15 15 -- 15 6.00
2 ER Medium Laser Aft 7 7 -- -- 10 2.00
1 C.A.S.E. Body 0.00
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TOTALS: Heat: 50 60.00
Tons Left: .00