just a little bit of work, not finished but the general idea is there.
The Onslaught-class is an atmospheric capable warship, making it perfect for use as a armed and armored transport.
Carrying four regular-sized drop pods, a single Onslaught can deliver 360 assault troops to any location and provide heavy support to those troops. Or, 232 troops and 4 light or medium combat tanks. Specialty configurations such as med-bays, communications and control centers, semi-permanent barracks and more are possible.
Basic - single level drop pod. Upper greenstuff will be life support, communications and control and emergency parachutes.
Basic battle plan is that X number of Onslaught gunships fitted with drop pods and support by other elements of the fleet can bring a modest number of troops to critical areas quickly and support those troops with enough firepower that the defenders will be unable to mount an attack of sufficient strength to overwhelm the troops. The Onslaught-class is most then capable of engaging air-speeders, ground vehicles and most planetary forces which consist of older fighters and up to CR-90 corvettes and analogues.
A standard Onslaught- ground assault force consists of 5 ships, for a total of 1800 ground troops. Along with two other Onslaughts configured with either airspeeder pods or starfighter pods; in addition to other ships present.