well i'd originally designed the unit as a Militia force.. defensive focus, being a 'flypaper' unit meant to slow down an invading mech force while other forces arrive. i wasn't thinking of using them offensively. if part of an offensive, i would assume such a force would be supplemental to a more conventional mech force, meant to act as a force multiplier and secure sites the mech force takes. being able to fit two regiments worth of combined armor and infantry into a single, fairly common dropship would certainly free up more collar space on a jumpship for other dropships with more valuable hardware in an invasion force.