DF has committed to buying all twenty Mulberry 36A cruisers it has on order, plus may order an extra pair to replace the ships lost in combat a few years ago. The Mulberry is a modified version of the Raegris built Cosmos / Yel'Tema design. They are often used as flagships or command ships for fleet deployments.
It is because of this role that DF is considering withdrawing the Missileer fleet and converting them back into transports and oilers. The need for the Missileer is no longer thought to be essential to DF going forward, though with delays expected in the next generation of heavy transport ships, converting them to transports or oilers could be very helpful.