Here's an idea for some NCR Sets.
NCR Trooper Pack
2x Standard NCR Soldier
1x Bandoleer NCR Soldier
1x Mantle NCR Soldier
Various terrain including part of a destroyed building with an NCR Flag
NCR Ranger Packs
2x Ranger Veterans
(ranger combat armour)
2x Rangers
(ranger patrol armour)
Various terrains with a destroyed building and Sunset Saspirilla Vending Machine
NCR Maintnace Crew
3x NCR Engineers
2x NCR Power Armour Units
Terrain from inside hover dam with a power armour repair station.
NCR Presidential Vertibird
The set would come with Kimbal's Vertibird with a landing pad from the assassination quest and also a bomb.
1xPresident Kimbal
1x Vertibird Pilot
2x Ranger Veteran
1x NCR engineer to represent the legion assassin