So what is your dropship doctrine? In my current game I'm using Light Carriers with FACs as my primary striking component:
Essex class Light Carrier 17,000 tons 929 Crew 2133.2 BP TCS 340 TH 1360 EM 0
4000 km/s Armour 1-58 Shields 0-0 Sensors 14/1/0/0 Damage Control Rating 27 PPV 0
Maint Life 2.95 Years MSP 549 AFR 330% IFR 4.6% 1YR 94 5YR 1409 Max Repair 40 MSP
Hangar Deck Capacity 7000 tons Magazine 1152
Merlin Mk2 MPD (17) Power 80 Fuel Use 60% Signature 80 Armour 0 Exp 5%
Fuel Capacity 850,000 Litres Range 150.0 billion km (434 days at full power)
Hornet Mk1 ASM-2 (288) Speed: 40,000 km/s End: 15.6m Range: 37.5m km WH: 6 Size: 4 TH: 240 / 144 / 72
Thermal Sensor TH1-14 (1) Sensitivity 14 Detect Sig Strength 1000: 14m km
Missile to hit chances are vs targets moving at 3000 km/s, 5000 km/s and 10,000 km/s
This design is classed as a Military Vessel for maintenance purposes
I didn't plan it out this way, but since I organize them in divisions of 3 carriers, that's 21000 tons of hangar capacity, so I created a:
PA-109 Albatross class Landing Craft Assault 1,000 tons 29 Crew 171.2 BP TCS 20 TH 56 EM 0
8000 km/s Armour 3-8 Shields 0-0 Sensors 1/1/0/0 Damage Control Rating 0 PPV 1.2
Maint Life 0 Years MSP 0 AFR 200% IFR 2.8% 1YR 74 5YR 1105 Max Repair 70 MSP
Drop Capacity: 1 Battalion Magazine 8
GB Magneto-plasma Drive E60 (1) Power 160 Fuel Use 600% Signature 56 Armour 0 Exp 15%
Fuel Capacity 10,000 Litres Range 3.0 billion km (4 days at full power)
Size 1 Box Launcher (8) Missile Size 1 Hangar Reload 7.5 minutes MF Reload 1.2 hours
Missile Fire Control FC0-R1 (1) Range 690k km Resolution 1
Gnat Mk1 AMM (8) Speed: 40,000 km/s End: 1.9m Range: 4.5m km WH: 1 Size: 1 TH: 400 / 240 / 120
Missile to hit chances are vs targets moving at 3000 km/s, 5000 km/s and 10,000 km/s
This design is classed as a Military Vessel for maintenance purposes
Which works out to exactly one division including HQs. Rather than having dedicated assault ships, this allows me to simply swap out the strike wings from a carrier division for dropships. Attach some standard transports for the journey and transfer to the landing craft just before the assault. I'm liking the strategic flexibility it affords; I don't have hulls idling when I'm not actively engaged in an assault, they simply revert to strike carriers.