quote:

ORIGINAL: BlueTemplar

You can do both.

For instance, you can have a Corps with :
A Commander with 300 "token" 1 metal & 1 IP infantry.
A relevant Posture (I'm using Fluid Defense).
5 regiments with 300-900 machineguns (= 1500-4500 total).
2 attached independent regiments with 30-180 buggies (= 60-360 total).

(I'm actually using a Heavy MG Infantry Brigade, not sure that OOB was actually worth investing into, though it *is* easier to raise than a Corps ?)

This way not only it costs you less PP to raise them 4+2*3 = 10 vs 7*2 = 14 (and with more maximum subunits per unit too !) -
(EDIT : Also, very important : it costs 0 PP to restore a lost formation unit !)
(Ok, I guess it's getting that commander that might be PP-expensive, though you can just throw a random cap I loser you don't need at it, for and effective cost of 0 PP)
- but you get the Commander and Posture bonuses to boot !