The Valkyrie-class ship a standard destroyer-sized troop transport with enough room to carry two companies of marines. Tactically it is weak for its size, only able to defend itself at short ranges from missiles and fighters.
As an atmosphere-capable ship, the Valkyrie is now often used to deploy heavy infantry support for tech raids on decivilized worlds.
The ability to deliver large amounts of troops directly to ground targets prompted the Hegemony bureaucrats to designate the hull as "restricted" for sale to third parties. Naturally, news of the restriction made it to the general public cycles before it came into effect, launching ill-fated speculation in the future prices of this class. Thus, overproduction and the hull's limited options made the speculator's activities bets largely moot, the only net result is that now, due to oversupply, it is just as easy to obtain a Valkyrie ship as before news of the Hegemony ban ever became public.
The Valkyrie is an good addition to a well rounded fleet, if one can be purloined. It combines low running costs with high max crew capacity for fighter or salvage fleets. Also low deployment costs with the ability to mount destroyer grade Nav Relay, ECM Package & Reinforced Bulkheads as a fleet combat support vessel. The fact that it is lacking the Civilian-grade Hull often found on ships with these benefits is a welcome extra