1st Regiment: Assault Regiment: 3 Overlords an 1 Modified Fortress (112 Mechs, 20 Vehicles)
1 LTV-4, Engineering Vehicle, Mash Truck, Mobile HQ
2x Heavy Battlemech Recovery Vehicle
2x Coolant truck
4x Mobile Long Tom
8x Ballista
4 J-27 Ordnance Transport
Infantry (AA equipped )
Pillager
5* Cyclops
4* Stalker
4* LongBow
13* Atlas
13* King Crab
12* Black Knight
12* Marauder MAD-3D
12* Warhammer WHM-6D
12* Orion ON1-V
24* Jagermech
Combat Wing: (18+40)
Command Flight: 2 Planes (Stuka)
1st Squadron: 4 Flights (Corsairs)
2nd Squadron: 4 Flight (Chippewa)
Since your asking here are some thoughts.
1. I doubt there are many units with that consolidated a dropship force in the Inner Sphere. Not a single Union? Unlikely. Certainly not a MERC unit.
And a Customized Fortress? Who has the resources or desire to mess with perfection like that??
2. Assault Regiments are rare. MERC Assault Regiments are almost unheard of. Units where the LIGHTEST mech is 65 tons. I don't think that even exists. Heck, even ZETA Battalion had a 50 Ton Hunchback in it.
3. Far too SLDF Homogeneous a looking force. 13 Atlas's in 1 regiment? I doubt even the Lyran's can claim that one, but maybe. Certainly not the minimum 65 tons part. And I'm not sure any unit in the IS in 3025 can claim to own an entire Cyclops Lance.
4. The entire mech force comes across as far too Davion + SLDF too. Unless that is there history. Even then, its unlikely that EVERY Marauder in the unit is the 3D variant. Ditto the 6D-WHammers.
5. More Artillery than many regiments would have too. & as mentioned by others, far too small a support structure.
Suggestions.
1. Still keeping a small DS force but to make it more realistic, Shift 4 Dropships to be 6. (Overlord, Fortress, Union, Union, Mule, Seeker)
This gives you 6 companies dropping from orbit if needed with the rest as cargo & a larger selection of vehicles on the Seeker.
2. Drop all but 1 of the Cyclops, KingCrab, & Blacknight. They are all rare chassis. Add in the Pillager & you have an SLDF feel Command Lance w/o the splurge of full lances & companies of rare models.
3. Drop the Atlas & D-Model Heavies down to a lance of each. Double up on your Stalker & Longbow populations that are more common.
Add in lances of Victor, Zeus, Battlemaster, & Banshee mechs. For that matter, instead of full lances, use pairs of mechs. 2 each of Zeus, Longbow, Banshee for fire support. Stalkers, Atlas, Victor, & B-Mers for close assault.
4. Use a Mix of Regular & "House" models. Archer-2R, Archer-2S, Rifleman-3N, & Griffin-1N all combine for a solid Fire Lance.
Marauder-3R + 3D + Warhammer-6R + 6D makes for 8 PPCs with out the unlikely homogeneous makeup above.
2 Full companies of Jagers? Drop that by 1/2 & make 1/2 the remaining mechs as Rifleman
5. All those Orions could be a mix of Orion, T-Bolt, GrassHopper, Crusader chassis, and lighten the unit up by mixing in Centurions, Shadowhawks, Whitworths, & Enforcers for 1/2 the chassis to give you a similar feel but reduce the tonnage a bit.
6. Finally, your going to need SOME form of recon even if its just a single lance per battalion of Light/Medium mechs.
Personally I think you should have quite a bit more than that, even for an Assault force.
Using the RAT force size for company/trinary make up an Assault Regiment should have battalions that look something like this.... roughly.
A1 = Assault, Heavy, Heavy
A2 = Assault, Heavy, Heavy
A3 = Heavy, Medium, Light
B1 = Assault, Heavy, Heavy
B2 = Heavy, Heavy, Medium
B3 = Heavy, Medium, Light
C1 = Heavy, Heavy, Heavy
C2 = Heavy, Medium, Light
C3 = Medium, Medium, Light
This gives you 3 dedicated Assault Lances + the RegCom and scattered assaults in 50% of the heavy lances.
And 1 battalion is built around fast heavies w/ lots of mediums & multiple scout lances to chase down opponents.
7. Cut the Artillery down to 2 lances from 3 & replace it with a platoon of recon spotter vehicles.
The artillery itself should probably include more Thumpers & less Long Toms.
8. Up your total infantry count to a battalion or so. Between scouts, security, & actual mech support troops that isn't too much at all.