And speaking of the Orion, here's a version with a smaller SRM for more armor and CASE (and HANDS, because we can):
Orion-LTAC
Mass: 75 tons
Tech Base: Inner Sphere
Chassis Config: Biped
Rules Level: Experimental Tech
Era: Succession Wars
Tech Rating/Era Availability: E/X-F-E-A
Production Year: 3025
Dry Cost: 7,686,000 C-Bills
Total Cost: 7,773,000 C-Bills
Battle Value: 1,778
Chassis: Unknown Endo-Steel
Power Plant: Unknown 300 Fusion Engine
Walking Speed: 43.2 km/h
Maximum Speed: 64.8 km/h
Jump Jets: Unknown
Jump Capacity: 120 meters
Armor: Unknown Standard Armor w/ CASE
Armament:
1 Long Tom Art. Cannon
2 Medium Lasers
1 SRM-2
Manufacturer: Unknown
Primary Factory: Unknown
Communications System: Unknown
Targeting and Tracking System: Unknown
================================================================================
Equipment Type Rating Mass
--------------------------------------------------------------------------------
Internal Structure: Endo-Steel 114 points 4.00
Internal Locations: 3 LT, 4 LA, 5 RA, 1 LL, 1 RL
Engine: Fusion Engine 300 19.00
Walking MP: 4
Running MP: 6
Jumping MP: 4 Standard
Jump Jet Locations: 2 CT, 1 LL, 1 RL 4.00
Heat Sinks: Double Heat Sink 10(20) 0.00
Gyro: Standard 3.00
Cockpit: Standard 3.00
Actuators: L: SH+UA+LA+H R: SH+UA+LA+H
Armor: Standard Armor AV - 231 14.50
CASE Locations: 1 LT 0.50
Internal Armor
Structure Factor
Head 3 9
Center Torso 23 35
Center Torso (rear) 11
L/R Torso 16 24
L/R Torso (rear) 8
L/R Arm 12 24
L/R Leg 16 32
================================================================================
Equipment Location Heat Critical Mass
--------------------------------------------------------------------------------
Medium Laser LA 3 1 1.00
Long Tom Art. Cannon RT/RA 20 12/3 20.00
SRM-2 LT 2 1 1.00
Medium Laser HD 3 1 1.00
@Long Tom Cannon (15) LT - 3 3.00
@SRM-2 (50) LT - 1 1.00
Free Critical Slots: 6
BattleForce Statistics
MV S (+0) M (+2) L (+4) E (+6) Wt. Ov Armor: 8 Points: 18
4j 2 3 2 0 3 1 Structure: 6
Special Abilities: ARTLTC, CASE, SRCH, ES, SEAL, SOA