>>64027365 (OP)Resources permitting, I copy the SLDF, with a few modern tweaks:
*WarShips. Lots of WarShips (My word, that's a lot of WarShips!). The ground troops get spread across the WarShips as cargo, with the DropShips used as assault landing craft, so it's harder for anybody to take out my troops in space. This was the cornerstone of how the SLDF made everything work.
*The aforementioned DropShips--something more along the lines of a Colossus or Conquistador than a Leopard or Union, with multiple A4s on the nose for fire support and SAM coverage. A few fast gunboats to help fend off enemy fighters.
*The basic ground unit would be something along the lines of a LCT/Combat Command/IS attempt at making a Cluster. A reinforced BN of mechs, call it 4 Coys plus command lance. Mechs would be designed with speed as the independent variable, with tonnage being optimized *for that particular speed bracket*. So, let's say, 8x(3/5, 100t), 24x(5/8, 75t), 16x(7/11, 50t), 4x(9/14, 35t)--XL and DHS in everything, preferably all Omnis for tactical (and more importantly, logistical!) flexibility.
*A BN of heavy armor. 3/5, 100t Assaults and 5/8, 75t Heavies. Again, Omnis. These would by used primarily in terrain that favors them, or to hold a line, or most often to provide lots and lots of artillery support.
*A Cav BN. Heavy hovercraft, Savannah Masters (Omni SM doubles as a great battle armor transport!), Heavy (maybe even 50t SuperHeavy) VTOLS, Omni Ferrets for aerial recon/gottagofast BA transport.
*A BA BN, like those found in post-invasion RCTs.
*A BN (wing) of fighters. Maybe even a double-sized one. Designs optimized for payload for a given thrust rating just like with the mechs.
*A support BN (techs, loggies, engineers). Probably the largest BN in terms of manpower.
That should give you roughly the same firepower as a RCT's Combat Command or one of those oversized Clusters with over a dozen Stars once you count the ASFs and BA.